What is Active
Directory ?
Active Directory is a Meta Data. Active Directory is a data base which store a data base like your user information, computer information and also other network object info. It has capabilities to manage and administor the complite Network which connect with AD.
Active Directory is a Meta Data. Active Directory is a data base which store a data base like your user information, computer information and also other network object info. It has capabilities to manage and administor the complite Network which connect with AD.
What is domain ?
Windows NT and Windows 2000, a domain is a set of network resources (applications, printers, and so forth) for a group of users. The user need only to log in to the domain to gain access to the resources, which may be located on a number of different servers in the network. The 'domain' is simply your computer address not to confused with an URL. A domain address might look something like 211.170.469.
Windows NT and Windows 2000, a domain is a set of network resources (applications, printers, and so forth) for a group of users. The user need only to log in to the domain to gain access to the resources, which may be located on a number of different servers in the network. The 'domain' is simply your computer address not to confused with an URL. A domain address might look something like 211.170.469.
What is domain controller ?
A Domain controller (DC) is a server that responds to security authentication requests (logging in, checking permissions, etc.) within the Windows Server domain. A domain is a concept introduced in Windows NT whereby a user may be granted access to a number of computer resources with the use of a single username and password combination.
A Domain controller (DC) is a server that responds to security authentication requests (logging in, checking permissions, etc.) within the Windows Server domain. A domain is a concept introduced in Windows NT whereby a user may be granted access to a number of computer resources with the use of a single username and password combination.
What is LDAP ?
Lightweight Directory Access Protocol LDAP is the industry standard directory access protocol, making Active Directory widely accessible to management and query applications. Active Directory supports LDAPv3 and LDAPv2.
Lightweight Directory Access Protocol LDAP is the industry standard directory access protocol, making Active Directory widely accessible to management and query applications. Active Directory supports LDAPv3 and LDAPv2.
What is KCC ?
KCC ( knowledge consistency checker ) is used to generate replication topology for inter site replication and for intrasite replication.with in a site replication traffic is done via remote procedure calls over ip, while between site it is done through either RPC or SMTP.
KCC ( knowledge consistency checker ) is used to generate replication topology for inter site replication and for intrasite replication.with in a site replication traffic is done via remote procedure calls over ip, while between site it is done through either RPC or SMTP.
Where is the AD database held? What other
folders are related to AD?
The AD data base is store in c:\windows\ntds\NTDS.DIT.
The AD data base is store in c:\windows\ntds\NTDS.DIT.
What is the SYSVOL folder?
The sysVOL folder stores the server's copy of the domain's public files. The contents such as group policy, users etc of the sysvol folder are replicated to all domain controllers in the domain.
The sysVOL folder stores the server's copy of the domain's public files. The contents such as group policy, users etc of the sysvol folder are replicated to all domain controllers in the domain.
What are the Windows
Server 2003 keyboard shortcuts ?
Winkey opens or closes the Start menu. Winkey + BREAK displays the System Properties dialog box. Winkey + TAB moves the focus to the next application in the taskbar. Winkey + SHIFT + TAB moves the focus to the previous application in the taskbar. Winkey + B moves the focus to the notification area. Winkey + D shows the desktop. Winkey + E opens Windows Explorer showing My Computer. Winkey + F opens the Search panel. Winkey + CTRL + F opens the Search panel with Search for Computers module selected. Winkey + F1 opens Help. Winkey + M minimizes all. Winkey + SHIFT+ M undoes minimization. Winkey + R opens Run dialog. Winkey + U opens the Utility Manager. Winkey + L locks the computer.
Where are the Windows NT Primary Domain Controller (PDC) and its Backup Domain Controller (BDC) in Server 2003 ?
The Active Directory replaces them. Now all domain controllers share a multimaster peer-to-peer read and write relationship that hosts copies of the Active Directory.
Winkey opens or closes the Start menu. Winkey + BREAK displays the System Properties dialog box. Winkey + TAB moves the focus to the next application in the taskbar. Winkey + SHIFT + TAB moves the focus to the previous application in the taskbar. Winkey + B moves the focus to the notification area. Winkey + D shows the desktop. Winkey + E opens Windows Explorer showing My Computer. Winkey + F opens the Search panel. Winkey + CTRL + F opens the Search panel with Search for Computers module selected. Winkey + F1 opens Help. Winkey + M minimizes all. Winkey + SHIFT+ M undoes minimization. Winkey + R opens Run dialog. Winkey + U opens the Utility Manager. Winkey + L locks the computer.
Where are the Windows NT Primary Domain Controller (PDC) and its Backup Domain Controller (BDC) in Server 2003 ?
The Active Directory replaces them. Now all domain controllers share a multimaster peer-to-peer read and write relationship that hosts copies of the Active Directory.
I am trying to create
a new universal user group. Why can’t I ?
Universal groups are allowed only in native-mode Windows Server 2003 environments. Native mode requires that all domain controllers be promoted to Windows Server 2003 Active Directory.
Universal groups are allowed only in native-mode Windows Server 2003 environments. Native mode requires that all domain controllers be promoted to Windows Server 2003 Active Directory.
What is LSDOU ?
It’s group
policy inheritance model, where the policies are applied toLocal machines, Sites, Domains and Organizational Units.
Why doesn’t LSDOU
work under Windows NT ?
If the NTConfig.pol file exist, it has the highest priority among the numerous policies.
If the NTConfig.pol file exist, it has the highest priority among the numerous policies.
What’s the number of
permitted unsuccessful logons on Administrator account? Unlimited. Remember, though,
that it’s the Administrator account, not any account that’s part of the
Administrators group.
What’s the
difference between guest accounts in Server 2003 and other editions?
More restrictive in Windows Server 2003.
More restrictive in Windows Server 2003.
How many passwords
by default are remembered when you check "Enforce Password History
Remembered"?
User’s last 6 passwords.
User’s last 6 passwords.
Can GC Server and
Infrastructure place in single server If not explain why ?
No, As Infrastructure master does the same job as the GC. It does not work together.
No, As Infrastructure master does the same job as the GC. It does not work together.
Which is service in
your windows is responsible for replication of Domain controller to another
domain controller.
KCC generates the replication topology.
Use SMTP / RPC to replicate changes.
KCC generates the replication topology.
Use SMTP / RPC to replicate changes.
What Intrasite and
Intersite Replication ?
Intrasite is the replication with in the same site & intersite the replication between sites.
Intrasite is the replication with in the same site & intersite the replication between sites.
What is lost &
found folder in ADS ?
It’s the folder where you can find the objects missed due to conflict.
Ex: you created a user in OU which is deleted in other DC & when replication happed ADS didn’t find the OU then it will put that in Lost & Found Folder.
It’s the folder where you can find the objects missed due to conflict.
Ex: you created a user in OU which is deleted in other DC & when replication happed ADS didn’t find the OU then it will put that in Lost & Found Folder.
What is Garbage
collection ?
Garbage collection is the process of the online defragmentation of active directory. It happens every 12 Hours.
Garbage collection is the process of the online defragmentation of active directory. It happens every 12 Hours.
What System State
data contains ?
Contains Startup files,
Registry
Com + Registration Database
Memory Page file
System files
AD information
Cluster Service information
SYSVOL Folder
Contains Startup files,
Registry
Com + Registration Database
Memory Page file
System files
AD information
Cluster Service information
SYSVOL Folder
What is the difference
between Windows 2000 Active Directory and Windows 2003 Active Directory? Is
there any difference in 2000 Group Polices and 2003 Group Polices? What is
meant by ADS and ADS services in Windows 2003?
Windows 2003 Active Directory introduced a number of new security features, as well as convenience features such as the ability to rename a domain controller and even an entire domain
Windows Server 2003 also introduced numerous changes to the default settings that can be affected by Group Policy - you can see a detailed list of each available setting and which OS is required to support it by downloading the Group Policy Settings Reference.
ADS stands for Automated Deployment Services, and is used to quickly roll out identically-configured servers in large-scale enterprise environments. You can get more information from the ADS homepage.
Windows 2003 Active Directory introduced a number of new security features, as well as convenience features such as the ability to rename a domain controller and even an entire domain
Windows Server 2003 also introduced numerous changes to the default settings that can be affected by Group Policy - you can see a detailed list of each available setting and which OS is required to support it by downloading the Group Policy Settings Reference.
ADS stands for Automated Deployment Services, and is used to quickly roll out identically-configured servers in large-scale enterprise environments. You can get more information from the ADS homepage.
I want to setup a DNS server
and Active Directory domain. What do I do first? If I install the DNS service
first and name the zone 'name.org' can I name the AD domain 'name.org' too?
Not only can you have a DNS zone and an Active Directory domain with the same name, it's actually the preferred way to go if at all possible. You can install and configure DNS before installing Active Directory, or you can allow the Active Directory Installation Wizard (dcpromo) itself install DNS on your server in the background.
Not only can you have a DNS zone and an Active Directory domain with the same name, it's actually the preferred way to go if at all possible. You can install and configure DNS before installing Active Directory, or you can allow the Active Directory Installation Wizard (dcpromo) itself install DNS on your server in the background.
>How do I determine if user
accounts have local administrative access?
You can use the net localgroup administrators command on each workstation (probably in a login script so that it records its information to a central file for later review). This command will enumerate the members of the Administrators group on each machine you run it on. Alternately, you can use the Restricted Groups feature of Group Policy to restrict the membership of Administrators to only those users you want to belong.
You can use the net localgroup administrators command on each workstation (probably in a login script so that it records its information to a central file for later review). This command will enumerate the members of the Administrators group on each machine you run it on. Alternately, you can use the Restricted Groups feature of Group Policy to restrict the membership of Administrators to only those users you want to belong.
Why am I having trouble
printing with XP domain users?
In most cases, the inability to print or access resources in situations like this one will boil down to an issue with name resolution, either DNS or WINS/NetBIOS. Be sure that your Windows XP clients' wireless connections are configured with the correct DNS and WINS name servers, as well as with the appropriate NetBIOS over TCP/IP settings. Compare your wireless settings to your wired LAN settings and look for any discrepancies that may indicate where the functional difference may lie.
In most cases, the inability to print or access resources in situations like this one will boil down to an issue with name resolution, either DNS or WINS/NetBIOS. Be sure that your Windows XP clients' wireless connections are configured with the correct DNS and WINS name servers, as well as with the appropriate NetBIOS over TCP/IP settings. Compare your wireless settings to your wired LAN settings and look for any discrepancies that may indicate where the functional difference may lie.
>What is the ISTG? Who has that
role by default?
Windows 2000 Domain controllers each create Active Directory Replication connection objects representing inbound replication from intra-site replication partners. For inter-site replication, one domain controller per site has the responsibility of evaluating the inter-site replication topology and creating Active Directory Replication Connection objects for appropriate bridgehead servers within its site. The domain controller in each site that owns this role is referred to as the Inter-Site Topology Generator (ISTG).
Windows 2000 Domain controllers each create Active Directory Replication connection objects representing inbound replication from intra-site replication partners. For inter-site replication, one domain controller per site has the responsibility of evaluating the inter-site replication topology and creating Active Directory Replication Connection objects for appropriate bridgehead servers within its site. The domain controller in each site that owns this role is referred to as the Inter-Site Topology Generator (ISTG).
What is
difference between Server 2003 vs 2008?
1. Virtualization. (Windows Server 2008 introduces Hyper-V (V for Virtualization) but only on 64bit versions. More and more companies are seeing this as a way of reducing hardware costs by running several 'virtual' servers on one physical machine.)
2. Server Core (provides the minimum installation required to carry out a specific server role, such as for a DHCP, DNS or print server)
3. Better security.
4. Role-based installation.
5. Read Only Domain Controllers (RODC).
6. Enhanced terminal services.
7. Network Access Protection - Microsoft's system for ensuring that clients connecting to Server 2008 are patched, running a firewall and in compliance with corporate security policies.
8. PowerShell - Microsoft's command line shell and scripting language has proved popular with some server administrators.
9. IIS 7 .
10. Bitlocker - System drive encryption can be a sensible security measure for servers located in remote branch offices. >br> The main difference between 2003 and 2008 is Virtualization, management. 2008 has more in-build components and updated third party drivers.
11. Windows Aero.
>What are
the requirements for installing AD on a new server?
1 The Domain structure.
2 The Domain Name .
3 storage location of the database and log file.
4 Location of the shared system volume folder.
5 DNS config Methode.
6 DNS configuration.
>What is LDP?
LDP : Label Distribution Protocol (LDP) is often used to
establish MPLS LSPs when traffic engineering is not required. It establishes
LSPs that follow the existing IP routing, and is particularly well suited for
establishing a full mesh of LSPs between all of the routers on the network.
What are the Groups
types available in active directory ?
Security groups: Use Security groups for granting permissions to gain access to resources. Sending an e-mail message to a group sends the message to all members of the group. Therefore security groups share the capabilities of distribution groups.
Security groups: Use Security groups for granting permissions to gain access to resources. Sending an e-mail message to a group sends the message to all members of the group. Therefore security groups share the capabilities of distribution groups.
Distribution groups: Distribution groups are used for
sending e-main messages to groups of users. You cannot grant permissions to
security groups. Even though security groups have all the capabilities of
distribution groups, distribution groups still requires, because some
applications can only read distribution groups.
Explain about the
groups scope in AD ?
Domain Local Group: Use this scope to grant permissions to domain resources that are located in the same domain in which you created the domain local group. Domain local groups can exist in all mixed, native and interim functional level of domains and forests. Domain local group memberships are not limited as you can add members as user accounts, universal and global groups from any domain. Just to remember, nesting cannot be done in domain local group. A domain local group will not be a member of another Domain Local or any other groups in the same domain.
Domain Local Group: Use this scope to grant permissions to domain resources that are located in the same domain in which you created the domain local group. Domain local groups can exist in all mixed, native and interim functional level of domains and forests. Domain local group memberships are not limited as you can add members as user accounts, universal and global groups from any domain. Just to remember, nesting cannot be done in domain local group. A domain local group will not be a member of another Domain Local or any other groups in the same domain.
Global Group: Users with similar function can be
grouped under global scope and can be given permission to access a resource
(like a printer or shared folder and files) available in local or another
domain in same forest. To say in simple words, Global groups can be use to
grant permissions to gain access to resources which are located in any domain
but in a single forest as their memberships are limited. User accounts and
global groups can be added only from the domain in which global group is
created. Nesting is possible in Global groups within other groups as you can
add a global group into another global group from any domain. Finally to
provide permission to domain specific resources (like printers and published
folder), they can be members of a Domain Local group. Global groups exist in
all mixed, native and interim functional level of domains and forests.
Universal Group Scope: These groups
are precisely used for email distribution and can be granted access to
resources in all trusted domain as these groups can only be used as a security
principal (security group type) in a windows 2000 native or windows server 2003
domain functional level domain. Universal group memberships are not limited
like global groups. All domain user accounts and groups can be a member of
universal group. Universal groups can be nested under a global or Domain Local
group in any domain.
What is REPLMON ?
The Microsoft definition of the Replmon tool is as follows; This GUI tool enables administrators to view the low-level status of Active Directory replication, force synchronization between domain controllers, view the topology in a graphical format, and monitor the status and performance of domain controller replication.
The Microsoft definition of the Replmon tool is as follows; This GUI tool enables administrators to view the low-level status of Active Directory replication, force synchronization between domain controllers, view the topology in a graphical format, and monitor the status and performance of domain controller replication.
What is ADSIEDIT ?
ADSIEDIT :ADSIEdit is a Microsoft Management Console (MMC) snap-in that acts as
a low-level editor for Active Directory. It is a Graphical User Interface (GUI)
tool. Network administrators can use it for common administrative tasks such as
adding, deleting, and moving objects with a directory service. The attributes
for each object can be edited or deleted by using this tool. ADSIEdit uses the
ADSI application programming interfaces (APIs) to access Active Directory. The
following are the required files for using this tool: ADSIEDIT.DLL ADSIEDIT.
What is NETDOM ?
NETDOM is a command-line tool that allows management of Windows domains and trust relationships. It is used for batch management of trusts, joining computers to domains, verifying trusts, and secure channels.
NETDOM is a command-line tool that allows management of Windows domains and trust relationships. It is used for batch management of trusts, joining computers to domains, verifying trusts, and secure channels.
What is REPADMIN?
This command-line tool assists administrators in diagnosing replication problems between Windows domain controllers.Administrators can use Repadmin to view the replication topology (sometimes referred to as RepsFrom and RepsTo) as seen from the perspective of each domain controller. In addition, Repadmin can be used to manually create the replication topology (although in normal practice this should not be necessary), to force replication events between domain controllers, and to view both the replication metadata and up-to-dateness vectors.
This command-line tool assists administrators in diagnosing replication problems between Windows domain controllers.Administrators can use Repadmin to view the replication topology (sometimes referred to as RepsFrom and RepsTo) as seen from the perspective of each domain controller. In addition, Repadmin can be used to manually create the replication topology (although in normal practice this should not be necessary), to force replication events between domain controllers, and to view both the replication metadata and up-to-dateness vectors.
How to take backup of AD ?
For taking backup of active directory you have to do this : first go START -> PROGRAM -ACCESORIES -> SYSTEM TOOLS -> BACKUP OR Open run window and ntbackup and take systemstate backup when the backup screen is flash then take the backup of SYSTEM STATE it will take the backup of all the necessary information about the syatem including AD backup , DNS ETC.
For taking backup of active directory you have to do this : first go START -> PROGRAM -ACCESORIES -> SYSTEM TOOLS -> BACKUP OR Open run window and ntbackup and take systemstate backup when the backup screen is flash then take the backup of SYSTEM STATE it will take the backup of all the necessary information about the syatem including AD backup , DNS ETC.
What are the DS* commands ?
The following DS commands: the DS family built in utility .
DSmod - modify Active Directory attributes.
DSrm - to delete Active Directory objects.
DSmove - to relocate objects
DSadd - create new accounts
DSquery - to find objects that match your query attributes.
DSget - list the properties of an object
The following DS commands: the DS family built in utility .
DSmod - modify Active Directory attributes.
DSrm - to delete Active Directory objects.
DSmove - to relocate objects
DSadd - create new accounts
DSquery - to find objects that match your query attributes.
DSget - list the properties of an object
What are the
requirements for installing AD on a new server?
An NTFS partition with enough free space.
An Administrator's username and password.
The correct operating system version.
A NIC Properly configured TCP/IP (IP address, subnet mask and - optional - default gateway).
A network connection (to a hub or to another computer via a crossover cable) .
An operational DNS server (which can be installed on the DC itself) .
A Domain name that you want to use .
The Windows 2000 or Windows Server 2003 CD media (or at least the i386 folder) .
An NTFS partition with enough free space.
An Administrator's username and password.
The correct operating system version.
A NIC Properly configured TCP/IP (IP address, subnet mask and - optional - default gateway).
A network connection (to a hub or to another computer via a crossover cable) .
An operational DNS server (which can be installed on the DC itself) .
A Domain name that you want to use .
The Windows 2000 or Windows Server 2003 CD media (or at least the i386 folder) .
Explain about Trust in AD ?
To allow users in one domain to access resources in another, Active Directory uses trusts. Trusts inside a forest are automatically created when domains are created.
To allow users in one domain to access resources in another, Active Directory uses trusts. Trusts inside a forest are automatically created when domains are created.
The forest sets the default boundaries of trust, not the domain,
and implicit, transitive trust is automatic for all domains within a forest. As
well as two-way transitive trust, AD trusts can be a shortcut (joins two
domains in different trees, transitive, one- or two-way), forest (transitive,
one- or two-way), realm (transitive or nontransitive, one- or two-way), or
external (nontransitive, one- or two-way) in order to connect to other forests
or non-AD domains.
Trusts in Windows 2000 (native mode)
One-way trust – One domain allows access to users on another domain, but the other domain does not allow access to users on the first domain.
Two-way trust – Two domains allow access to users on both domains.
Trusting domain – The domain that allows access to users from a trusted domain.
Trusted domain – The domain that is trusted; whose users have access to the trusting domain.
Transitive trust – A trust that can extend beyond two domains to other trusted domains in the forest.
Intransitive trust – A one way trust that does not extend beyond two domains.
Explicit trust – A trust that an admin creates. It is not transitive and is one way only.
Cross-link trust – An explicit trust between domains in different trees or in the same tree when a descendant/ancestor (child/parent) relationship does not exist between the two domains.
Windows 2000 Server – supports the following types of trusts:
Two-way transitive trusts.
One-way intransitive trusts.
Additional trusts can be created by administrators. These trusts can be:
Shortcut
Windows Server 2003 offers a new trust type – the forest root trust. This type of trust can be used to connect Windows Server 2003 forests if they are operating at the 2003 forest functional level. Authentication across this type of trust is Kerberos based (as opposed to NTLM). Forest trusts are also transitive for all the domains in the forests that are trusted. Forest trusts, however, are not transitive.
One-way trust – One domain allows access to users on another domain, but the other domain does not allow access to users on the first domain.
Two-way trust – Two domains allow access to users on both domains.
Trusting domain – The domain that allows access to users from a trusted domain.
Trusted domain – The domain that is trusted; whose users have access to the trusting domain.
Transitive trust – A trust that can extend beyond two domains to other trusted domains in the forest.
Intransitive trust – A one way trust that does not extend beyond two domains.
Explicit trust – A trust that an admin creates. It is not transitive and is one way only.
Cross-link trust – An explicit trust between domains in different trees or in the same tree when a descendant/ancestor (child/parent) relationship does not exist between the two domains.
Windows 2000 Server – supports the following types of trusts:
Two-way transitive trusts.
One-way intransitive trusts.
Additional trusts can be created by administrators. These trusts can be:
Shortcut
Windows Server 2003 offers a new trust type – the forest root trust. This type of trust can be used to connect Windows Server 2003 forests if they are operating at the 2003 forest functional level. Authentication across this type of trust is Kerberos based (as opposed to NTLM). Forest trusts are also transitive for all the domains in the forests that are trusted. Forest trusts, however, are not transitive.
Difference between LDIFDE and
CSVDE?
CSVDE is a command that can be used to import and export objects to and from the AD into a CSV-formatted file. A CSV (Comma Separated Value) file is a file easily readable in Excel. I will not go to length into this powerful command, but I will show you some basic samples of how to import a large number of users into your AD. Of course, as with the DSADD command, CSVDE can do more than just import users. Consult your help file for more info.
LDIFDE is a command that can be used to import and export objects to and from the AD into a LDIF-formatted file. A LDIF (LDAP Data Interchange Format) file is a file easily readable in any text editor, however it is not readable in programs like Excel. The major difference between CSVDE and LDIFDE (besides the file format) is the fact that LDIFDE can be used to edit and delete existing AD objects (not just users), while CSVDE can only import and export objects.
CSVDE is a command that can be used to import and export objects to and from the AD into a CSV-formatted file. A CSV (Comma Separated Value) file is a file easily readable in Excel. I will not go to length into this powerful command, but I will show you some basic samples of how to import a large number of users into your AD. Of course, as with the DSADD command, CSVDE can do more than just import users. Consult your help file for more info.
LDIFDE is a command that can be used to import and export objects to and from the AD into a LDIF-formatted file. A LDIF (LDAP Data Interchange Format) file is a file easily readable in any text editor, however it is not readable in programs like Excel. The major difference between CSVDE and LDIFDE (besides the file format) is the fact that LDIFDE can be used to edit and delete existing AD objects (not just users), while CSVDE can only import and export objects.
What is tombstone lifetime
attribute ?
The number of days before a deleted object is removed from the directory services. This assists in removing objects from replicated servers and preventing restores from reintroducing a deleted object. This value is in the Directory Service object in the configuration NIC.
The number of days before a deleted object is removed from the directory services. This assists in removing objects from replicated servers and preventing restores from reintroducing a deleted object. This value is in the Directory Service object in the configuration NIC.
What are application partitions?
When do I use them ?
AN application diretcory partition is a directory partition that is replicated only to specific domain controller.Only domain controller running windows Server 2003 can host a replica of application directory partition.
Using an application directory partition provides redundany,availability or fault tolerance by replicating data to specific domain controller pr any set of domain controllers anywhere in the forest.
AN application diretcory partition is a directory partition that is replicated only to specific domain controller.Only domain controller running windows Server 2003 can host a replica of application directory partition.
Using an application directory partition provides redundany,availability or fault tolerance by replicating data to specific domain controller pr any set of domain controllers anywhere in the forest.
How do you create a new
application partition ?
Use the DnsCmd command to create an application directory partition.
To do this, use the following syntax:
DnsCmd ServerName /CreateDirectoryPartition FQDN of partition
Use the DnsCmd command to create an application directory partition.
To do this, use the following syntax:
DnsCmd ServerName /CreateDirectoryPartition FQDN of partition
How do you view all the GCs in the
forest?
C:\>repadmin /showreps domain_controller where domain_controller is the DC you want to query to determine whether it?s a GC.
The output will include the text DSA Options: IS_GC if the DC is a GC.
C:\>repadmin /showreps domain_controller where domain_controller is the DC you want to query to determine whether it?s a GC.
The output will include the text DSA Options: IS_GC if the DC is a GC.
Can you connect Active Directory
to other 3rd-party Directory Services? Name a few options.
Yes, you can use dirXML or LDAP to connect to other directories.
In Novell you can use E-directory.
Yes, you can use dirXML or LDAP to connect to other directories.
In Novell you can use E-directory.
What is IPSec Policy
IPSec provides secure gateway-to-gateway connections across outsourced private wide area network (WAN) or Internet-based connections using L2TP/IPSec tunnels or pure IPSec tunnel mode. IPSec Policy can be deployed via Group policy to the Windows Domain controllers 7 Servers.
IPSec provides secure gateway-to-gateway connections across outsourced private wide area network (WAN) or Internet-based connections using L2TP/IPSec tunnels or pure IPSec tunnel mode. IPSec Policy can be deployed via Group policy to the Windows Domain controllers 7 Servers.
What are the different types
of Terminal Services ?
User Mode & Application Mode.
User Mode & Application Mode.
What is RsOP
RsOP is the resultant set of policy applied on the object (Group Policy).
RsOP is the resultant set of policy applied on the object (Group Policy).
What is the System Startup
process ?
Windows 2K boot process on a Intel architecture.
Windows 2K boot process on a Intel architecture.
1. Power-On Self Tests (POST) are run.
2. The boot device is found, the Master Boot Record (MBR) is
loaded into memory, and its program is run.
3. The active partition is located, and the boot sector is
loaded.
4. The Windows 2000 loader (NTLDR) is then loaded.
The boot sequence executes the
following steps:
1. The Windows 2000 loader switches the processor to the 32-bit
flat memory model.
2. The Windows 2000 loader starts a mini-file system.
3. The Windows 2000 loader reads the BOOT.INI file and displays
the operating system selections (boot loader menu).
4. The Windows 2000 loader loads the operating system selected
by the user. If Windows 2000 is selected, NTLDR runs NTDETECT.COM. For other
operating systems, NTLDR loads BOOTSECT.DOS and gives it control.
5. NTDETECT.COM scans the hardware installed in the computer,
and reports the list to NTLDR for inclusion in the Registry under the
HKEY_LOCAL_MACHINE_HARDWARE hive.
6. NTLDR then loads the NTOSKRNL.EXE, and gives it the hardware
information collected by NTDETECT.COM. Windows NT enters the Windows load
phases.
How do you change the DS Restore admin
password ?
In Windows 2000 Server, you used to have to boot the computer whose
password you wanted to change in Directory Restore mode, then use either the
Microsoft Management Console (MMC) Local User and Groups snap-in or the command
net user administrator * to change the Administrator password.
Win2K Server Service Pack 2 (SP2) introduced the Setpwd utility, which lets you reset the Directory Service Restore Mode password without having to reboot the computer. (Microsoft refreshed Setpwd in SP4 to improve the utility?s scripting options.)
In Windows Server 2003, you use the Ntdsutil utility to modify the Directory Service Restore Mode Administrator password.
Win2K Server Service Pack 2 (SP2) introduced the Setpwd utility, which lets you reset the Directory Service Restore Mode password without having to reboot the computer. (Microsoft refreshed Setpwd in SP4 to improve the utility?s scripting options.)
In Windows Server 2003, you use the Ntdsutil utility to modify the Directory Service Restore Mode Administrator password.
To do so, follow these steps:
1. Start Ntdsutil (click Start, Run; enter cmd.exe; then enter ntdsutil.exe).
2. Start the Directory Service Restore Mode Administrator password-reset utility by entering the argument ?set dsrm password? at the ntdsutil prompt: ntdsutil: set dsrm password.
3. Run the Reset Password command, passing the name of the server on which to change the password, or use the null argument to specify the local machine.
For example, to reset the password on server testing, enter the following argument at the Reset DSRM Administrator Password prompt: Reset DSRM Administrator Password: reset password on server testing
1. Start Ntdsutil (click Start, Run; enter cmd.exe; then enter ntdsutil.exe).
2. Start the Directory Service Restore Mode Administrator password-reset utility by entering the argument ?set dsrm password? at the ntdsutil prompt: ntdsutil: set dsrm password.
3. Run the Reset Password command, passing the name of the server on which to change the password, or use the null argument to specify the local machine.
For example, to reset the password on server testing, enter the following argument at the Reset DSRM Administrator Password prompt: Reset DSRM Administrator Password: reset password on server testing
To reset the password on the local machine, specify null as the server
name:
Reset DSRM Administrator Password: reset password on server null
Reset DSRM Administrator Password: reset password on server null
4. You?ll be prompted twice to enter the new password. You?ll see the
following messages:
5. Please type password for DS Restore Mode Administrator Account:
6. Please confirm new password:
Password has been set successfully.
7. Exit the password-reset utility by typing ?quit? at the following prompts:
8. Reset DSRM Administrator Password: quit
ntdsutil: quit
5. Please type password for DS Restore Mode Administrator Account:
6. Please confirm new password:
Password has been set successfully.
7. Exit the password-reset utility by typing ?quit? at the following prompts:
8. Reset DSRM Administrator Password: quit
ntdsutil: quit
I am upgrading from NT to 2003. The only things
that are NT are the PDC and BDCs; everything else is 2000 or 2003 member
servers. My question is, when I upgrade my NT domain controllers to 2003, will
I need to do anything else to my Windows 2000/2003 member servers that were in
the NT domain?
Your existing member servers, regardless of operating system, will simply become member servers in your upgraded AD domain. If you will be using Organizational Units and Group Policy (and I hope you are), you'll probably want to move them to a specific OU for administration and policy application, since they'll be in the default "Computers" container immediately following the upgrade.
Your existing member servers, regardless of operating system, will simply become member servers in your upgraded AD domain. If you will be using Organizational Units and Group Policy (and I hope you are), you'll probably want to move them to a specific OU for administration and policy application, since they'll be in the default "Computers" container immediately following the upgrade.
How
do I use Registry keys to remove a user from a group?
Why
are my NT4 clients failing to connect to the Windows 2000 domain?
The first step is to install Windows 2003 on your new DC. This is a
straighforward process, so we aren?t going to discuss that here.
Because significant changes have been made to the Active Directory
schema in Windows 2003, we need to make our Windows 2000 Active Directory
compatible with the new version. If you already have Windows 2003 DCs running
with Windows 2000 DCs, then you can skip down to the part about DNS.
Before you attempt this step, you should make sure that you have service
pack 4 installed on your Windows 2000 DC. Next, make sure that you are logged
in as a user that is a member of the Schema Admin and Enterprise Admin groups.
Next, insert the Windows 2003 Server installation CD into the Windows
2000 Server.
Bring up a command line and change directories to the I386 directory on the installation CD. At the command prompt, type: Code :
adprep /forestprep After running this command, make sure that the updates have been replicated to all existing Windows 2000 DCs in the forest. Next, we need to run the following command: Code : adprep /domainprep
Bring up a command line and change directories to the I386 directory on the installation CD. At the command prompt, type: Code :
adprep /forestprep After running this command, make sure that the updates have been replicated to all existing Windows 2000 DCs in the forest. Next, we need to run the following command: Code : adprep /domainprep
The above command must be run on the Infrastructure Master of the domain
by someone who is a member of the Domain Admins group.
Once this is complete, we move back to the Windows 2003 Server. Click ?start? then ?run? - type in dcpromo and click OK. During the ensuing wizard, make sure that you select that you are adding this DC to an existing domain.
After this process is complete, the server will reboot. When it comes back online, check and make sure that the AD database has been replicated to your new server.
Next, you will want to check and make sure that DNS was installed on your new server.
Once this is complete, we move back to the Windows 2003 Server. Click ?start? then ?run? - type in dcpromo and click OK. During the ensuing wizard, make sure that you select that you are adding this DC to an existing domain.
After this process is complete, the server will reboot. When it comes back online, check and make sure that the AD database has been replicated to your new server.
Next, you will want to check and make sure that DNS was installed on your new server.
If not, go to the control panel,
click on ?Add or Remove Programs?, and click the ?Add/Remove Windows Components? button.
In the Windows Components screen, click on ?Networking Services? and click the details button.
click on ?Add or Remove Programs?, and click the ?Add/Remove Windows Components? button.
In the Windows Components screen, click on ?Networking Services? and click the details button.
In the new window check ?Domain Name System (DNS)? and then click the OK
button. Click ?Next? in the Windows Components screen.
This will install DNS and the server will reboot. After reboot, pull up the DNS Management window and make sure that your DNS settings have replicated from the Windows 2000 Server. You will need to re-enter any forwarders or other properties you had set up, but the DNS records should replicate on their own.
This will install DNS and the server will reboot. After reboot, pull up the DNS Management window and make sure that your DNS settings have replicated from the Windows 2000 Server. You will need to re-enter any forwarders or other properties you had set up, but the DNS records should replicate on their own.
The next 2 items, global catalog and FSMO roles, are important if you
plan on decomissioning your Windows 2000 server(s). If this is the case, you
need to tansfer the global catalog from the old server to the new one.
1. On the domain controller where you want the
new global catalog, start the Active Directory Sites and Services snap-in.
To start the snap-in, click ?Start?, point to ?Programs?, point to ?Administrative Tools?, and then click ?Active Directory Sites and Services?.
To start the snap-in, click ?Start?, point to ?Programs?, point to ?Administrative Tools?, and then click ?Active Directory Sites and Services?.
2. In the console tree, double-click ?Sites?, and then double-click ?sitename?.
3. Double-click ?Servers?, click your domain controller, right-click ?NTDS Settings?, and then click ?Properties?.
4. On the General tab, click to select the Global catalog check box to assign the role of global catalog to this server.
5. Restart the domain controller.
Make sure you allow sufficient time for the
account and the schema information to replicate to the new global catalog
server before you remove the global catalog from the original DC or take the DC
offline.
After this is complete, you will want to
transfer or seize the FSMO roles for your new server.
For instructions, read Using Ntdsutil.exe to transfer or seize FSMO roles to a domain controller.
After this step is complete, we can now run DCPROMO on the Windows 2000 Servers in order to demote them.
Once this is complete, copy over any files you
need to your new server and you should have successfully replaced your Windows
2000 server(s) with a new Windows 2003 server.
How do you view replication properties for AD partitions and DCs?
By using replication monitor
go to start > run > type repadmin
go to start > run > type replmon
By using replication monitor
go to start > run > type repadmin
go to start > run > type replmon
Why can't you restore a DC that
was backed up 4 months ago?
Because of the tombstone life which is set to only 60 days.
Because of the tombstone life which is set to only 60 days.
Different modes of AD restore ?
A nonauthoritative restore is the default method for restoring Active Directory. To perform a nonauthoritative restore, you must be able to start the domain controller in Directory Services Restore Mode. After you restore the domain controller from backup, replication partners use the standard replication protocols to update Active Directory and associated information on the restored domain controller.
A nonauthoritative restore is the default method for restoring Active Directory. To perform a nonauthoritative restore, you must be able to start the domain controller in Directory Services Restore Mode. After you restore the domain controller from backup, replication partners use the standard replication protocols to update Active Directory and associated information on the restored domain controller.
An authoritative restore
brings a domain or a container back to the state it was in at the time of
backup and overwrites all changes made since the backup. If you do not want to
replicate the changes that have been made subsequent to the last backup operation,
you must perform an authoritative restore. In this one needs to stop the
inbound replication first before performing the An authoritative restore.
How do you configure a stand-by
operation master for any of the roles?
# Open Active Directory Sites and Services.
# Expand the site name in which the standby operations master is located to display the Servers folder.
# Expand the Servers folder to see a list of the servers in that site.
# Expand the name of the server that you want to be the standby operations master to display its NTDS Settings.
# Right-click NTDS Settings, click New, and then click Connection.
# In the Find Domain Controllers dialog box, select the name of the current role holder, and then click OK.
# In the New Object-Connection dialog box, enter an appropriate name for the Connection object or accept the default name, and click OK.
# Open Active Directory Sites and Services.
# Expand the site name in which the standby operations master is located to display the Servers folder.
# Expand the Servers folder to see a list of the servers in that site.
# Expand the name of the server that you want to be the standby operations master to display its NTDS Settings.
# Right-click NTDS Settings, click New, and then click Connection.
# In the Find Domain Controllers dialog box, select the name of the current role holder, and then click OK.
# In the New Object-Connection dialog box, enter an appropriate name for the Connection object or accept the default name, and click OK.
What's the
difference between transferring a FSMO role and seizing ?
Seizing an FSMO can be a destructive process and should only be attempted if the existing server with the FSMO is no longer available.
If you perform a seizure of the FSMO
roles from a DC, you need to ensure two things:
the current holder is actually dead and offline, and that the old DC will NEVER return to the network. If you do an FSMO role Seize and then bring the previous holder back online, you'll have a problem.
An FSMO role TRANSFER is the graceful
movement of the roles from a live, working DC to another live DC During the
process, the current DC holding the role(s) is updated, so it becomes aware it
is no longer the role holder
I want to
look at the RID allocation table for a DC. What do I do?
dcdiag /test:ridmanager /s:servername /v (servername is the name of our DC)
What
is BridgeHead Server in AD ?
A bridgehead server is a domain
controller in each site, which is used as a contact point to receive and
replicate data between sites. For intersite replication, KCC designates one of
the domain controllers as a bridgehead server. In case the server is down, KCC
designates another one from the domain controller. When a bridgehead server
receives replication updates from another site, it replicates the data to the
other domain controllers within its site.
What is the default size of ntds.dit ?
10 MB in Server 2000 and 12 MB in Server 2003 .
10 MB in Server 2000 and 12 MB in Server 2003 .
Where is the AD database held
and What are other folders related to AD ?
AD Database is saved in %systemroot%/ntds. You can see other files also in this folder. These are the main files controlling the AD structure.
AD Database is saved in %systemroot%/ntds. You can see other files also in this folder. These are the main files controlling the AD structure.
ntds.dit
edb.log
res1.log
res2.log
edb.chk
edb.log
res1.log
res2.log
edb.chk
When a change is made to the Win2K database, triggering a write
operation, Win2K records the transaction in the log file (edb.log). Once
written to the log file, the change is then written to the AD database. System
performance determines how fast the system writes the data to the AD database
from the log file. Any time the system is shut down, all transactions are saved
to the database.
During the installation of AD, Windows creates two files:
res1.log and res2.log. The initial size of each is 10MB. These files are used
to ensure that changes can be written to disk should the system run out of free
disk space. The checkpoint file (edb.chk) records transactions committed to the
AD database (ntds.dit). During shutdown, a "shutdown" statement is
written to the edb.chk file.
Then, during a reboot, AD determines that all transactions in
the edb.log file have been committed to the AD database. If, for some reason,
the edb.chk file doesn't exist on reboot or the shutdown statement isn't
present, AD will use the edb.log file to update the AD database. The last file
in our list of files to know is the AD database itself, ntds.dit. By default,
the file is located in\NTDS, along with the other files we've discussed
>What FSMO placement considerations
do you know of ?
Windows 2000/2003 Active Directory domains utilize a Single Operation Master method called FSMO (Flexible Single Master Operation), as described in Understanding FSMO Roles in Active Directory.
Windows 2000/2003 Active Directory domains utilize a Single Operation Master method called FSMO (Flexible Single Master Operation), as described in Understanding FSMO Roles in Active Directory.
In most cases an administrator can keep the FSMO role holders
(all 5 of them) in the same spot (or actually, on the same DC) as has been
configured by the Active Directory installation process.
However, there are scenarios where an administrator would want
to move one or more of the FSMO roles from the default holder DC to a different
DC.
Windows Server 2003 Active Directory is a bit different than the Windows 2000 version when dealing with FSMO placement.
Windows Server 2003 Active Directory is a bit different than the Windows 2000 version when dealing with FSMO placement.
In this article I will only deal with Windows Server 2003 Active
Directory, but you should bear in mind that most considerations are also true
when planning Windows 2000 AD FSMO roles
>What do you do to install a new
Windows 2003 R2 DC in a Windows 2003 AD?
If you're installing Windows 2003 R2 on an existing Windows 2003 server with SP1 installed, you require only the second R2 CD-ROM.
If you're installing Windows 2003 R2 on an existing Windows 2003 server with SP1 installed, you require only the second R2 CD-ROM.
Insert the second CD and the r2auto.exe will display the Windows
2003 R2 Continue Setup screen. If you're installing R2 on a domain controller
(DC), you must first upgrade the schema to the R2 version (this is a minor change
and mostly related to the new Dfs replication engine).
To update the schema, run the Adprep utility, which you'll find
in the Components\r2\adprep folder on the second CD-ROM.
Before running this command, ensure all DCs are running Windows 2003 or Windows 2000 with SP2 (or later).
Before running this command, ensure all DCs are running Windows 2003 or Windows 2000 with SP2 (or later).
Here's a sample execution of the Adprep /forestprep
command:
D:\CMPNENTS\R2\ADPREP>adprep /forestprep
ADPREP WARNING:
Before running adprep, all Windows 2000 domain controllers in the forest should be upgraded to Windows 2000 Service Pack 1 (SP1) with QFE 265089, or to Windows 2000 SP2 (or later).
command:
D:\CMPNENTS\R2\ADPREP>adprep /forestprep
ADPREP WARNING:
Before running adprep, all Windows 2000 domain controllers in the forest should be upgraded to Windows 2000 Service Pack 1 (SP1) with QFE 265089, or to Windows 2000 SP2 (or later).
QFE 265089 (included in Windows 2000 SP2 and later) is required
to prevent potential domain controller corruption.
[User Action] If ALL your existing Windows 2000 domain controllers meet this requirement, type C and then press ENTER to continue. Otherwise, type any other key and press ENT ER to quit.
C Opened Connection to SAV
[User Action] If ALL your existing Windows 2000 domain controllers meet this requirement, type C and then press ENTER to continue. Otherwise, type any other key and press ENT ER to quit.
C Opened Connection to SAV
DALDC01 SSPI Bind succeeded Current Schema Version is 30
Upgrading schema to version 31 Connecting to "SAVDALDC01" Logging in
as current user using SSPI Importing directory from file
"C:\WINDOWS\system32\sch31.ldf" Loading entries... 139 entries
modified successfully.
The command has completed successfully Adprep successfully
updated the forest-wide information.
After running Adprep, install R2 by performing these steps:
After running Adprep, install R2 by performing these steps:
1. Click the "Continue Windows Server 2003 R2 Setup"
link, as the figureshows.
2. At the "Welcome to the Windows Server 2003 R2 Setup Wizard" screen, click Next.
3. You'll be prompted to enter an R2 CD key (this is different from your existing Windows 2003 keys) if the underlying OS wasn't installed from R2 media (e.g., a regular Windows 2003 SP1 installation).
Enter the R2 key and click Next. Note: The license key entered for R2 must match the underlying OS type, which means if you installed Windows 2003 using a volume-license version key, then you can't use a retail or Microsoft Developer Network (MSDN) R2 key.
4. You'll see the setup summary screen which confirms the actions to be performed (e.g., Copy files). Click Next.
5. After the installation is complete, you'll see a confirmation dialog box. Click Finish
2. At the "Welcome to the Windows Server 2003 R2 Setup Wizard" screen, click Next.
3. You'll be prompted to enter an R2 CD key (this is different from your existing Windows 2003 keys) if the underlying OS wasn't installed from R2 media (e.g., a regular Windows 2003 SP1 installation).
Enter the R2 key and click Next. Note: The license key entered for R2 must match the underlying OS type, which means if you installed Windows 2003 using a volume-license version key, then you can't use a retail or Microsoft Developer Network (MSDN) R2 key.
4. You'll see the setup summary screen which confirms the actions to be performed (e.g., Copy files). Click Next.
5. After the installation is complete, you'll see a confirmation dialog box. Click Finish
What is OU ?
Organization Unit is a container object in which you can keep objects such as user accounts, groups, computer, printer . applications and other (OU).
In organization unit you can assign specific permission to the user's. organization unit can also be used to create departmental limitation.
Organization Unit is a container object in which you can keep objects such as user accounts, groups, computer, printer . applications and other (OU).
In organization unit you can assign specific permission to the user's. organization unit can also be used to create departmental limitation.
Name some OU design considerations
?
OU design requires balancing requirements for delegating administrative rights - independent of Group Policy needs - and the need to scope the application of Group Policy.
OU design requires balancing requirements for delegating administrative rights - independent of Group Policy needs - and the need to scope the application of Group Policy.
The
following OU design recommendations address delegation and scope issues:
Applying Group Policy An OU is the lowest-level Active Directory container to which you can assign Group Policy settings.
Delegating administrative authority
usually don't go more than 3 OU levels
Applying Group Policy An OU is the lowest-level Active Directory container to which you can assign Group Policy settings.
Delegating administrative authority
usually don't go more than 3 OU levels
What is sites ? What are they used for ?
One or more well-connected (highly reliable and fast) TCP/IP subnets.
A site allows administrators to configure Active Directory access and replication topology to take advantage of the physical network.
One or more well-connected (highly reliable and fast) TCP/IP subnets.
A site allows administrators to configure Active Directory access and replication topology to take advantage of the physical network.
A Site object in Active Directory represents a physical
geographic location that hosts networks. Sites contain objects called Subnets.
Sites can be used to Assign Group Policy Objects, facilitate the
discovery of resources, manage active directory replication, and manage network
link traffic.
Sites can be linked to other Sites. Site-linked objects may be assigned a cost value that represents the speed, reliability, availability, or other real property of a physical resource. Site Links may also be assigned a schedule.
Sites can be linked to other Sites. Site-linked objects may be assigned a cost value that represents the speed, reliability, availability, or other real property of a physical resource. Site Links may also be assigned a schedule.
Trying to look at the Schema, how
can I do that ?
register schmmgmt.dll using this command
c:\windows\system32>regsvr32 schmmgmt.dll
Open mmc --> add snapin --> add Active directory schema
name it as schema.msc
Open administrative tool --> schema.msc
register schmmgmt.dll using this command
c:\windows\system32>regsvr32 schmmgmt.dll
Open mmc --> add snapin --> add Active directory schema
name it as schema.msc
Open administrative tool --> schema.msc
What is
the port no of Kerbrose ?
88
What is
the port no of Global catalog ?
3268
What is
the port no of LDAP ?
389
Explain
Active Directory Schema ?
Windows 2000 and Windows Server 2003 Active Directory uses a database set of rules called "Schema". The Schema is defines as the formal definition of all object classes, and the attributes that make up those object classes, that can be stored in the directory. As mentioned earlier, the Active Directory database includes a default Schema, which defines many object classes, such as users, groups, computers, domains, organizational units, and so on.
These objects are also known as
"Classes". The Active Directory Schema can be dynamically extensible,
meaning that you can modify the schema by defining new object types and their
attributes and by defining new attributes for existing objects. You can do this
either with the Schema Manager snap-in tool included with Windows 2000/2003
Server, or programmatically.
How
can you forcibly remove AD from a server, and what do you do later? ? Can I
get user passwords from the AD database?
Dcpromo /forceremoval ,
an administrator can forcibly remove Active Directory and roll back the
system without having to contact or replicate any locally held changes to
another DC in the forest. Reboot the server then After you use the dcpromo
/forceremoval command, all the remaining metadata for the demoted DC is not
deleted on the surviving domain controllers, and therefore you must manually
remove it by using the NTDSUTIL command.
In the event that the NTDS Settings object is
not removed correctly you can use the Ntdsutil.exe utility to manually remove
the NTDS Settings object. You will need the following tool: Ntdsutil.exe,
Active Directory Sites and Services, Active Directory Users and Computers
What are the
FSMO roles? Who has them by default? What happens when each one fails?
Flexible Single Master Operation (FSMO) role. Currently there are five FSMO roles:
Schema master
Domain naming master
RID master
PDC emulator
Infrastructure master
What is domain
tree ?
Domain Trees: A domain tree comprises several domains that share a common schema and configuration, forming a contiguous namespace. Domains in a tree are also linked together by trust relationships. Active Directory is a set of one or more trees.
Trees can be viewed two ways. One view is the trust relationships between domains. The other view is the namespace of the domain tree.
What is forests
?
A collection of one or more domain trees with a common schema and implicit trust relationships between them. This arrangement would be used if you have multiple root DNS addresses.
How to Select
the Appropriate Restore Method ?
You select the appropriate restore method by considering:
Circumstances and characteristics of the failure. The two major categories of failure, From an Active Directory perspective, are Active Directory data corruption and hardware failure.
Active Directory data corruption occurs when
the directory contains corrupt data that has been replicated to all domain
controllers or when a large portion of the Active Directory hierarchy has
been changed accidentally (such as deletion of an OU) and this change has
replicated to other domain controllers.
Where are the Windows
NT Primary Domain Controller (PDC) and its Backup Domain Controller (BDC) in
Server 2003?
The Active Directory replaces them. Now all domain controllers share a multimaster peer-to-peer read and write relationship that hosts copies of the Active Directory.
The Active Directory replaces them. Now all domain controllers share a multimaster peer-to-peer read and write relationship that hosts copies of the Active Directory.
What is Global Catalog?
The Global Catalog authenticates network user logons and fields inquiries about objects across a forest or tree. Every domain has at least one GC that is hosted on a domain controller. In Windows 2000, there was typically one GC on every site in order to prevent user logon failures across the network.
The Global Catalog authenticates network user logons and fields inquiries about objects across a forest or tree. Every domain has at least one GC that is hosted on a domain controller. In Windows 2000, there was typically one GC on every site in order to prevent user logon failures across the network.
How long does it take for security changes
to be replicated among the domain controllers?
Security-related modifications are replicated within a site immediately. These changes include account and individual user lockout policies, changes to password policies, changes to computer account passwords, and modifications to the Local Security Authority (LSA).
Security-related modifications are replicated within a site immediately. These changes include account and individual user lockout policies, changes to password policies, changes to computer account passwords, and modifications to the Local Security Authority (LSA).
When
should you create a forest?
Organizations that operate on radically different bases may require separate trees with distinct namespaces. Unique trade or brand names often give rise to separate DNS identities. Organizations merge or are acquired and naming continuity is desired. Organizations form partnerships and joint ventures. While access to common resources is desired, a separately defined tree can enforce more direct administrative and security restrictions.
Describe the
process of working with an external domain name ?
If it is not possible for you to configure your internal domain as a subdomain of your external domain, use a stand-alone internal domain. This way, your internal and external domain names are unrelated. For example, an organization that uses the domain name contoso.com for their external namespace uses the name corp.internal for their internal namespace.
The advantage to this approach is that it
provides you with a unique internal domain name. The disadvantage is that this
configuration requires you to manage two separate namespaces. Also, using a
stand-alone internal domain that is unrelated to your external domain might
create confusion for users because the namespaces do not reflect a relationship
between resources within and outside of your network.
In addition, you might have to register two DNS
names with an Internet name authority if you want to make the internal domain
publicly accessible.
How
do you view all the GCs in the forest?
C:\>repadmin /showreps
domain_controller
domain_controller
OR
You can use Replmon.exe for the same purpose.
OR
AD Sites and Services and nslookup gc._msdcs.
You can use Replmon.exe for the same purpose.
OR
AD Sites and Services and nslookup gc._msdcs.
To find the in GC from the command line you can
try using DSQUERY command.
dsquery server -isgc to find all the GC’s in the forest
you can try dsquery server -forest -isgc.
dsquery server -isgc to find all the GC’s in the forest
you can try dsquery server -forest -isgc.
Latest Active Directory Interview
Questions
What are the physical components
of Active Directory ?
Domain controllers and Sites. Domain controllers are physical
computers which is running Windows Server operating system and Active Directory
data base. Sites are a network segment based on geographical location and which
contains multiple domain controllers in each site.
What are the logical components
of Active Directory ?
Domains, Organizational Units, trees and forests are logical
components of Active Directory.
What are the Active Directory
Partitions ?
Active Directory database is divided into different partitions
such as Schema partition, Domain partition, and Configuration partition. Apart
from these partitions, we can create Application partition based on the
requirement.
What is group nesting ?
Adding one group as a member of another group is called 'group
nesting'. This will help for easy administration and reduced replication
traffic.
What is the feature of Domain
Local Group ?
Domain local groups are mainly used for granting access to
network resources.A Domain local group can contain accounts from any domain,
global groups from any domain and universal groups from any domain. For
example, if you want to grant permission to a printer located at Domain A, to
10 users from Domain B, then create a Global group in Domain B and add all 10
users into that Global group. Then, create a Domain local group at Domain A,
and add Global group of Domain B to Domain local group of Domain A, then, add
Domain local group of Domain A to the printer(of Domain A) security ACL.
How will you take Active Directory
backup ?
Active Directory is backed up along with System State data.
System state data includes Local registry, COM+, Boot files, NTDS.DIT and
SYSVOL folder. System state can be backed up either using Microsoft's default
NTBACKUP tool or third party tools such as Symantech NetBackup, IBM Tivoli
Storage Manager etc.
What is Lost and Found Container
?
In multimaster replication method, replication conflicts can
happen. Objects with replication conflicts will be stored in a container called
'Lost and Found' container. This container also used to store orphaned user
accounts and other objects.
Do we use clustering in Active
Directory ? Why ?
No one installs Active Directory in a cluster. There is no need
of clustering a domain controller. Because Active Directory provides total
redundancy with two or more servers.
What is Active Directory Recycle
Bin ?
Active Directory Recycle bin is a feature of Windows
Server 2008 AD. It helps to restore accidentally deleted Active Directory
objects without using a backed up AD database, rebooting domain controller or
restarting any services.
What is RODC ? Why do we
configure RODC ?
Read only domain controller (RODC) is a feature of Windows
Server 2008 Operating System. RODC is a read only copy of Active Directory
database and it can be deployed in a remote branch office where physical
security cannot be guaranteed. RODC provides more improved security and faster
log on time for the branch office.
How do you check currently forest
and domain functional levels? Say both GUI and Command line.
To find out forest and domain functional levels in GUI mode,
open ADUC, right click on the domain name and take properties. Both domain and
forest functional levels will be listed there. TO find out forest and domain
functional levels, you can use DSQUERY command.
Which version of Kerberos is used
for Windows 2000/2003 and 2008 Active Directory ?
All versions of Windows Server Active Directory use Kerberos 5.
Name few port numbers related to Active
Directory ?
Kerberos 88, LDAP 389, DNS 53, SMB 445
What is an FQDN ?
FQDN can be expanded as Fully Qualified Domain Name.It is a
hierarchy of a domain name system which points to a device in the domain at its
left most end. For example in system.
Have you heard of ADAC ?
ADAC- Active Directory Administrative Center is a new GUI tool
came with Windows Server 2008 R2, which provides enhanced data management
experience to the admin. ADAC helps administrators to perform common Active
Directory object management task across multiple domains with the same ADAC
instance.
How many objects can be created
in Active Directory? (both 2003 and 2008)
As per Microsoft, a single AD domain controller can create
around 2.15 billion objects during its lifetime.
explain the process between a
user providing his Domain credential to his workstation and the desktop being
loaded? Or how the AD authentication works ?
When a user enters a user name and password, the computer sends
the user name to the KDC. The KDC contains a master database of unique long
term keys for every principal in its realm. The KDC looks up the user's master
key (KA), which is based on the user's password. The KDC then creates two
items: a session key (SA) to share with the user and a Ticket-Granting Ticket
(TGT). The TGT includes a second copy of the SA, the user name, and an
expiration time. The KDC encrypts this ticket by using its own master key
(KKDC), which only the KDC knows. The client computer receives the information
from the KDC and runs the user's password through a one-way hashing function,
which converts the password into the user's KA. The client computer now has a
session key and a TGT so that it can securely communicate with the KDC. The
client is now authenticated to the domain and is ready to access other
resources in the domain by using the Kerberos protocol.
What Is Urgent Replication And
When Is It Used ?
You probably know how Active Directory core replication works.
When there’s an object changed, the source DC, the one that serviced the change
request, notifies it’s direct replication neighbours that there was a change to
some object. The neighbors then start the replication process by requesting the
changes made since the last replication.
Important to know is, that there is a “notification delay”
between the actual change to the objects in the directory and the notification
sent to the replication partners. Server 2003 DCs wait 15 seconds before they
fire out the change notification. This delay is there to only send one change
notification once the change transaction to the object is done. If there are
multiple changes made to an object, let’s say the phone number, the home town
and the employeeID of a user and the changes were made in 1 second delay each,
we only send one change notification for those three changes. If there was no
notification delay and we waited a second between the changes to a user’s
attributes, the source DC were sending three change notifications to its
partners. Too much traffic there! Note that the default change notificaction
delay in Windows 2000 was 5 minutes (the numbers may differ depending on
installation type (upgrade from 2000 to 2003, forest functional level, …).
Given that fact, one can think of several scenarios which may
lead to “problem” since the change to the directory is not replicated right
away: user Password changes, user lockout, Password Policy changed,…
For this reason, there’s urgent replication. Urgent replication
works in the same way “normal” replication does, but has no notification delay
of a few seconds/minutes. That makes “urgent” changes that need to be
distributed thrughout the sites and DCs to get more quickly to all edges.
Urgent replication takes place in the following cases:
The Password Policy or account lockout policy of a domain has
changed
The LSA secret has changed (that’s used for the “secure
channels” between machines and DCs and trusts)
a user or computer is locked out due to a failed logon attempt
(in this case, the urgent replication is used to notify the DC with the PDC
emulator role first and then to all others)
the RID master has changed
So — if one of the mentioned events take place, urgent
replication takes place and there’s no notification delay prior to change
notification of neighbour DCs.
Which FSMO role directly
impacting the consistency of Group Policy ?
PDC Emulator.
I want to
promote a new additional Domain Controller in an existing domain. Which are the
groups I should be a member of ?
You should be a member of Enterprise Admins group or the Domain
Admins group. Also you should be member of local Administrators group of the
member server which you are going to promote as additional Domain Controller.
Tell me one easiest way to check all the 5 FSMO roles ?
Use netdom query /domain:YourDomain FSMO command. It will
list all the FSMO role handling domain controllers.
What is Realm trust
?
Use realm trusts to form a trust relationship between a non-Windows Kerberos realm and an Active Directory domain.
Use realm trusts to form a trust relationship between a non-Windows Kerberos realm and an Active Directory domain.
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