1SERVERS IN YOUR ENTERPRISE. IF THE WAN LINK IS SLOW, YOU MIGHT WA...

2.2.1servers in your enterprise. If the WAN link is slow, you might want to place DNS cachingservers at each location to reduce WAN traffic related to DNS resolution.You might alsoconsider providing a DNS server at each location to provide redundancy. In addition, bycreating an AD integrated primary zone, you will allow clients to update their resourcerecords locally. Defining which DNS servers can act as forwarders and perform iterativequeries will help manage the Internet traffic.You should also provide a DHCP server at each location.When you have multipleDHCP servers on your network, use the 80/20 rule to balance the load on the subnet: 80percent of the scope will be on the primary server, with 20 percent on the other server.The DHCP server must have an interface on each network for which it has a scopedefined, or you must locate a DHCP relay server on the same subnet as the DHCP clients.If you implement WINS, you will need to examine the quantity of data replicatedbetween WINS servers and the cost of WINS reverse lookups from DNS servers.Youshould minimize the number of WINS servers you implement in order to minimize theimpact of WINS replication traffic on your network.Use the Help and Support Center on Windows Server 2003 to see examples of perfor-mance statistics in a high traffic environment to help you gauge your enterprise needs.

Planning Network Traffic Management

EXAM