单项选择题 You are a network administrator for your company. The network consists of a single Active Directory forest that contains three domains. The functional level of the forest and of all three domains is Window Server 2003. The company has a main office and 30 branch offices. Each branch office is connected to the main office by a 56-Kbps WAN connection. You configure the main office and each branch office as a separate Active Directory site. You deploy a Windows Server 2003 domain controller at the main office and at each branch office. Each domain controller is configured as a DNS server.   You can log on to the network from client computers in the branch offices at any time. However， users in the branch offices report that they cannot log on to the network during peak hours.   You need to allow users to log on to the network from branch office computers. You do not want to affect the performance of the branch office domain controllers. You need to minimize Active Directory replication traffic across the WAN connections.   What should you do？ （）

单项选择题 You are the network administrator for Tailspin Toys. The company has a main office and two branch offices. The network in the main office contains 10 servers and 100 client computers. Each branch office contains 5 servers and 50 client computers. Each branch office is connected to the main office by a direct T1 line.   The network design requires that company IP addresses must be assigned from a single classful private IP address range. The network is assigned a class C private IP address range to allocate IP addresses for servers and client computers.  Tailspin Toys acquires a company named Wingtip Toys. The acquisition will increase the number of servers to 20 and the number of client computers to 200 in the main office. The acquisition is expected to increase the number of servers to 20 and the number of client computers to 200 in the branch offices. The acquisition will also add 10 more branch offices. After the acquisition， all branch offices will be the same size. Each branch office will be connected to the main office by a direct T1 line. The new company will follow the Tailspin Toys network design requirements.   You need to plan the IP addressing for the new company. You need to comply with the network design requirement.   What should you do？  （）

单项选择题 You are a network administrator for your company. You need to test a new application.   The application requires two processors and 2 GB of RAM. The application also requires shared folders on the application server and requires the installation of software on the client computers.   You create the test plan. You assemble a server in the test lab. You install Windows Server 2003， Web Edition on theserver. You install the application on the server. You install the client software components for the application on 20 client computers in the test lab.   You test the application. You discover that only some of the client computers can run the application. You turn off the client computers that ran the application successfully， and you test again. The client computers that failed in the first test now run the application successfully.   You need to identify the cause of the failure and update your test plan.   What should you do？ （）