[单选]

Your network contains a domain controller that is configured as a DNS server. The server hosts  an Active Directory-integrated zone for the domain.    
You need to reduce how long it takes until stale records are deleted from the zone.    
What should you do（）

You are the network administrator for your company. The network consists of a single Active Directorydomain. All network servers run Windows Server 2003. All client computers run Windows XP Professional SP2.Server1 is a domain controller. Server2 runs Windows Software Update Services (WSUS). No options have been changed in the administrative console.You configure the client computers to access the services on Server1 and Server2. An initial synchronization and approval is successfully completed. The client computers receive and install the approved patches successfully.Three months later, Microsoft releases a critical security update for Windows XP Professional. From a test client computer, you use Microsoft Update to download the update. You test the update and receive no error messages.Now you need to deploy the update to all client computers as quickly as possible. You must ensure that the update is not deployed to any servers.Which two actions should you perform? （）(Each correct answer presents part of the solution. Choose two.) On Server1, configure the Default Domain Policy Group Policy object (GPO) to distribute the security update.。 On Server1, initiate replication.。 On Server2, initiate synchronization.。 On Server2, approve the security update.。 根据《UCP600》，信用证中货物的数量规定有“约”、“大约”、“近似”或类似意义的词语时，应理解为其有关数量增减幅度不超过（）。 3%。 5%。 10%。 15%。 下面有关主键的叙述正确的是（）。 不同的记录可以具有重复的主键值或空值。 一个表中的主键可以是一个或多个字段。 在一个表中的主键只可以是一个字段。 表中的主键的数据类型必须定义为自动编号或文本。 在Photoshop中，使用缩放工具将图像放大后，将从如图所示左边的效果变为右边的效果，这与图像的（）有关。   模式。 尺寸。 分辨率。 格式。 （）以解决人内心的和外在的人际冲突为核心，这在当今时代具有积极的社会意义。 积极心理治疗。 传统心理治疗。 心理健康。

Your network contains a domain controller that is configured as a DNS server. The server hosts  an Active Directory-integrated zone for the domain.    
You need to reduce how long it takes until stale records are deleted from the zone.    
What should you do（）