多项选择题 You are a network administrator for Alpine Ski House. The network consists of a single Active Directory domain. The domain name is alpineskihouse.com. The network contains three Windows Server 2003 domain controllers. You are creating the recovery plan for the company. According to the existing backup plan， domain controllers are backed up by using normal backups each night. The normal backups of the domain controllers include the system state of each domain controller. Your recovery plan must incorporate the following organizational requirements. Active Directory objects that are accidentally or maliciously deleted must be recoverable. Active Directory must be restored to its most recent state as quickly as possible. Active Directory database replication must be minimized.You need to create a plan to restore a deleted organizational unit （OU）.  Which two actions should you include in your plan？（）

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 Your company has a single Active Directory directory service domain. All servers in your environment run Windows Server 2003. All domain controllers run Active DirectoryCintegrated DNS. You create several static host （A） resource records. You need to verify that the DNS server is sending the correct host records to all client computers.  Which command-line tool should you use？（）