单项选择题
A. On one node， run the nlb.exe reload command.
B. On each node， run the wlbs.exe drainstop command.
C. Use Network Load Balancing Manager to enable Internet Group Management Protocol （IGMP） support on the cluster.
D. Use Network Load Balancing Manager to add a second cluster IP address.
单项选择题 You are the network administrator for your company. The network consists of a single Active Directory domain. All computers on the network are members of the domain. You administer a three-node Network Load Balancing cluster. Each cluster node runs Windows Server 2003 and has a single network adapter. The cluster has converged successfully. You notice that the nodes in the cluster run at almost full capacity most of the time. You want to add a fourth node to the cluster. You enable and configure Network Load Balancing on the fourth node. However， the cluster does not converge to a four-node cluster. In the System log on the existing three nodes， you find the exact same TCP/IP error event. The event has the following description： "The system detected an address conflict for IP address 10.50.8.70 with the system having network hardware address 02：BF：0A：32：08：46." In the System log on the new fourth node， you find a similar TCP/error event with the following description： "The system detected an address conflict for IP address 10.50.8.70 with the system having network hardware address 03：BF：0A：32：08：46." Only the hardware address is different in the two descriptions. You verify that IP address 10.50.8.70 is configured as the cluster IP address on all four nodes. You want to configure a four-node Network Load Balancing cluster. What should you do？ （）
单项选择题 You are the network administrator for your company. The network consists of a single Active Directory domain. All computers on the network are members of the domain. You administer a Network Load Balancing cluster that consists of three nodes. Each node runs Windows Server 2003 and contains a single network adapter. The Network Load Balancing cluster can run only in unicast mode. The Network Load Balancing cluster has converged successfully. To increase the utilization of the cluster， you decide to move a particular application to each node of the cluster. For this application to run， you must add a Network Load Balancing port rule to the nodes of the cluster. You start Network Load Balancing Manager on the second node of the cluster. However， Network Load Balancing Manager displays a message that it cannot communicate with the other two nodes of the cluster. You want to add the port rule to the nodes of the cluster. What should you do？ （）
单项选择题 You are a network administrator for your company. The network contains four Windows Server 2003 computers configured as a four-node server cluster. Each cluster node is the preferred owner of a clustered instance of Microsoft SQL Server 2000， and each cluster node is configured as a possible owner of all other instances of SQL Server. All nodes have identically configured hardware. All four nodes operate at a sustained 70 percent CPU average. You add a server that has identically configured hardware to the cluster as a fifth node. You want each SQL Server instance to continue operating at the same level of performance in the event of a single node failure. What should you do？ （）