单项选择题
A.all client computers to use the IP address of a DNS server on the Internet as the primary DNS server
B.all client computers to use the IP address of a DNS server on the Internet as the secondary DNS server
C.the internal DNS servers to use a forwarder
D.the internal DNS servers to use round robin
单项选择题 You have a server that runs Windows Server 2003 Service Pack 2 （SP2）. The server has the Routing and Remote Access service enabled and is configured as a network address translation （NAT） router. You need to view a list of the current sessions on the Routing and Remote Access server and the private and public IP addresses and ports that are being used. What should you do？（）
单项选择题 You have a server that runs Windows Server 2003 Service Pack 2 （SP2）. The server has the Routing and Remote Access service enabled and connects to the Internet by using a demand-dial connection. From the Routing and Remote Access snap-in， you open the properties of the server and enable the Log additional Routing and Remote Access information setting. You need to review the log file for issues related to the demand-dial connection. Which file should you review？（）
单项选择题 You have a server that runs Windows Server 2003 Service Pack 2 （SP2）. The server is configured as a network address translation （NAT） router. The server has two network adapters and provides Internet access for the network. You need to prevent traffic on port 21 from being sent to the Internet. All other outbound traffic must be allowed. What should you do？（）