MCTS 70-640 AD Sites, Replication & Forest Trusts 1 — Questions and Answers
Question 1: What is an Active Directory site in Windows Server 2008?
- A physical building that hosts a domain controller
- A logical representation of a well-connected IP network segment used to control replication and service location (Correct answer)
- A group of OUs with similar security policies
- A secondary DNS zone for branch offices
Correct answer: A logical representation of a well-connected IP network segment used to control replication and service location
An AD site represents a set of well-connected subnets, enabling AD to optimize replication traffic and guide clients to nearby domain controllers.
Question 2: Which object defines which domain controllers replicate with each other within a site?
- Site link
- Connection object (Correct answer)
- Subnet object
- Site link bridge
Correct answer: Connection object
Connection objects define one-way replication partnerships between domain controllers; the KCC automatically creates them within a site.
Question 3: What is the role of the Knowledge Consistency Checker (KCC) in Active Directory?
- Auditing schema changes
- Automatically generating and maintaining the replication topology by creating connection objects (Correct answer)
- Synchronizing DNS records between sites
- Enforcing password policies across the forest
Correct answer: Automatically generating and maintaining the replication topology by creating connection objects
The KCC is a built-in AD process that automatically builds and repairs the replication topology by creating and deleting connection objects on each DC.
Question 4: What is the default replication interval between sites when using a site link?
- 180 minutes (Correct answer)
- 60 minutes
- 15 minutes
- 24 hours
Correct answer: 180 minutes
By default, inter-site replication via site links is scheduled every 180 minutes (3 hours), unlike intra-site replication which is near-real-time.
Question 5: Which protocol can be used for inter-site replication over slower or unreliable WAN links as an alternative to RPC?
- SMTP (Correct answer)
- FTP
- HTTP
- SNMP
Correct answer: SMTP
SMTP-based inter-site replication can be used for non-domain-naming-context partitions (like schema and configuration) over unreliable links where RPC is not feasible.
Question 6: What is a site link bridge in Active Directory?
- A physical network device connecting two AD sites
- A logical object that allows transitive replication routing through multiple site links (Correct answer)
- A backup domain controller for a remote site
- A Kerberos delegation token for cross-site authentication
Correct answer: A logical object that allows transitive replication routing through multiple site links
A site link bridge connects two or more site links, enabling replication to route transitively through intermediate sites when direct links don't exist.
MCTS 70-640 AD Sites, Replication & Forest Trusts 1
What is an Active Directory site in Windows Server 2008?