多项选择题 You are a network administrator for your company. The design team provides you with the following list of requirements for server disaster recovery：   No more than two sets of tapes can be used to restore to the previous day.  A full backup of each server must be stored off-site.   A full backup of each server that is no more than one week old must be available on-site.  Backups must never run during business hours.   Tapes may be recalled from off-site storage only if the on-site tapes are corrupted or damaged. A full backup of all servers requires approximately 24 hours. Backing up all files that change during one week requires approximately 4 hours. Business hours for the company are Monday through Friday， from 6：00 A.M. to 10：00 P.M.  You need to provide a backup rotation plan that meets the design team’s requirements.   Which two actions should you include in your plan？（）

单项选择题 You are the network administrator for your company. The network consists of a single Active Directory domain. The company has a main office in San Francisco and branch offices in Paris and Bogota. Each branch office contains a Windows Server 2003 domain controller. All client computers run Windows XP Professional.   Users in the Bogota office report intermittent problems authenticating to the domain. You suspect that a specific client computer is causing the problem.   You need to capture the authentication event details on the domain controller in the Bogota office so that you can find out the IP address of the client computer that is the source of the problem.   What should you do？  （）

单项选择题 You are the network administrator for your company. You need to provide Internet name resolution services for the company. You set up a Windows Server 2003 computer running the DNS Server service to provide this network service.   During testing， you notice the following intermittent problems：   Name resolution queries sometimes take longer than one minute to resolve.   Some valid name resolution queries receive the following error message in the Nslookup command-line tool： "Non-existent domain."   You suspect that there is a problem with name resolution.   You need to review the individual queries that the server handles. You want to configure monitoring on the DNS server to troubleshoot the problem.   What should you do？ （）