在安装Wndows Server 2008 R2 之前有哪些注意事项？

Your network contains two servers named Server1 and Server2 that run Windows Server 2008 R2.From Server1, you create a collector-initiated subscription that uses Server2 as a source computer.You verify the event subscription and discover the error message shown in the exhibit. (Click the Exhibit button.) You need to ensure that the subscription collection runs successfully.What should you do？（）

A. On Server1, run winrm quickconfig.

B. On Server2, run winrm quickconfig.

C. From the properties of the subscription, modify the User Account options.

D. From the properties of the subscription, modify the Protocol and Port options.

Your company has four DNS servers that run Windows Server 2008 R2. Each server has a static IP address.You need to prevent DHCP from assigning the addresses of the DNS servers to DHCP clients.What should you do？（）

A. Create a new scope for the DNS servers.

B. Create a reservation for the DHCP server.

C. Configure the 005 Name Servers scope option.

D. Configure an exclusion that contains the IP addresses of the four DNS servers.

Your company has two servers that run Windows Server 2008 R2 named Server2 and Server3. Both servers have the DNS Server server role installed. Server3 is configured to forward all DNS requests to Server2.You update a DNS record on Server2. You need to ensure that Server3 is able to immediately resolve the updated DNS record.What should you do？（）

A. Run the dnscmd . /clearcache command on Server3.

B. Run the ipconfig /flushdns command on Server3.

C. Decrease the Time-to-Live (TTL) on the Start of Authority (SOA) record of na.contoso.com to 15 minutes.

D. Increase the Retry Interval value on the Start of Authority (SOA) record of na.contoso.com to 15 minutes.

You have 10 standalone servers that run Windows Server 2008 R2.You install the Windows Server Update Services (WSUS) server role on a server named Server1.You need to configure all of the servers to receive updates from Server1.What should you do？（）

A. Configure the Windows Update settings on each server by using the Control Panel.

B. Run the wuauclt.exe /detectnow command on each server.

C. Run the wuauclt.exe /reauthorization command on each server.

D. Configure the Windows Update settings on each server by using a local group policy.