70-290 - 70-291 Testing

Using the Domain Controller Diagnostic Tool

You are the network administrator for Certkiller .com. Your network consists of a
single Active Directory that contains two domains named Certkiller .com and
chicago. Certkiller .com. The functional level of the forest is Windows Server 2003. The
network contains two sites named New York and Chicago. A 128-Kbps site link
connects the New York and Chicago sites.
The Certkiller .com domain contains a domain controller named CK1 in the New York
site. The Chicago Certkiller .com domain contains a domain controller named CK2 in
the Chicago site. CK1 is an Active Directory-integrated DNS server and a global
catalog server. There are 1,500 users in the New York site and 80 users in the
Chicago site.
Users in the Chicago site report that it takes a long time to log on to the network.
You need to ensure that the users in the Chicago site can log on faster.
What should you do?

A. Decrease the value of the Maximum lifetime for user ticket Kerberos policy in the
Default Domain Policy Group Policy object (GPO) of the chicago. Certkiller .com domain.
B. Enable universal group membership caching for CK2 in Active Directory Sites and
Services.
C. Enable the Interactive Logon: Number of previous logons to cache security policy in
the Default Domain Policy Group Policy object (GPO) of the chicago. Certkiller .com
domain.
D. Decrease the value of the replication interval at the site link between the Chicago and
New York sites.

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Answer: B

Explanation:
The reason why it takes a long time to log on to DC2 is because DC2
needs to contact DC1 over a WAN link to obtain universal group information
whenever someone logs on. The global catalog server is the domain controller that
stores information about all objects in the forest, but not their attributes, so that
applications can search Active Directory without referring to specific domain
controllers that store the requested data. Like all domain controllers, a global
catalog server stores full, writable replicas of the schema and configuration
directory partitions and a full, writable replica of the domain directory partition for
the domain that it is hosting.
We can prevent WAN traffic by sing Universal group membership caching. Universal
group membership caching allows the domain controller to cache universal group
membership information for users. You can enable domain controllers that are running
Windows Server 2003 to cache universal group memberships by using the Active
Directory Sites and Services snap-in.
Enabling universal group membership caching eliminates the need for a global catalog
server at every site in a domain, which minimizes network bandwidth usage because a
domain controller does not need to replicate all of the objects located in the forest. It also
reduces logon times because the authenticating domain controllers do not always need to
access a global catalog to obtain universal group membership information.
Incorrect Answers:
A: Windows Server 2003 uses Kerberos for authentication purposes. It does not affect
logon times.
C: The Interactive Logon: Number of previous logons to cache security policy
determines the number of times a user can log on to a Windows domain using cached
account information. All previous users' logon information is cached locally so that, in
the event that a domain controller is unavailable during subsequent logon attempts, they
are able to log on. This is enabled by default is set to 10.
D: The problem in this scenario is not a replication problem. DC2 needs to contact DC1
over a WAN link to obtain universal group information whenever a user logs on.
Reducing the replication interval will not resolve this problem.
Reference:
Jill Spealman, Kurt Hudson & Melissa Craft, MCSE Self-Paced Training Kit (Exam
70-294: Planning, Implementing, and Maintaining a Microsoft Windows Server 2003
Active Directory Infrastructure, Microsoft Press, Redmond, Washington, 2004, pp. 1-17
to 1-18, 5-41 to 5-45, 5-48 to 5-50.
Michael Cross, Jeffery A. Martin, Todd A. Walls, Martin Grasdal, Debra Littlejohn
Shinder & Dr. Thomas W. Shinder, MCSE: Exam 70-294: Planning, Implementing, and
Maintaining a Windows Server 2003 Active Directory Infrastructure Study Guide &
DVD Training System, Syngress Publishing, Rockland, MA, 2003, pp. 31, 543, 547,
550-552.
Server Help: Interactive Logon