Lesson 9

In this module, we discussed some important topics regarding the physical structure of the Active Directory.
Now that you have completed this module, you should be able to:

1. Define sites and site links
2. List reasons for creating Active Directory sites
3. Recognize the effect of replication traffic on a slow link
4. Define the relationship between sites and subnets
5. Define the replication components and the purpose of each
6. List two ways to create connection objects
7. Define the difference between intra-site and inter site replication
8. List the characteristics of site link costs
9. Monitor replication traffic using the System Monitor (Performance) and the Replication Monitor

Here is a list of terms used in this module that may have been new to you::

1. Connection object: An object that represents a one-way replication path between two server objects and points to the replication source.
2. Intersite replication: Replication of the Active Directory partition that occurs between different sites.
3. Intra-site replication: Replication of the Active Directory partition that occurs within a site.
4. Knowledge Consistency Checker (KCC): A built-in service that runs on all domain controllers and automatically establishes connections between individual machines in the same site.
5. RPC over IP: Remote Procedure Call is a message-passing facility that is used for remote administration of computers. It can run over the Internet Protocol (IP).
6. Site links: A relationship between two sites that allows replication to occur.
7. Site link cost: A way of comparing the efficiency and desirability of using a particular site link based on speed, impact on the network and other factors.
8. SMTP: Simple Mail Transfer Protocol; a protocol often used for sending Internet mail, which can also be used for replication over site links in Active Directory.