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  3. You are the administrator of a Windows 2000 Network for Ezonexam Inc. The network includes four Web servers named WWW1, WWW2, WW

You are the administrator of a Windows 2000 Network for Ezonexam Inc. The network includes four Web servers named WWW1, WWW2, WW

admin2009-05-19  29
问题 You are the administrator of a Windows 2000 Network for Ezonexam Inc. The network includes four Web servers named WWW1, WWW2, WWW3, and WWW4. Your network also includes a Windows 2000 Server computer that uses DNS.

Each Web server contains exactly the same content, and users accessing www.Ezonexam.com can be directed to any one of them.

You add records to your DNS server, as shown in the following table.

Record type Name IP address
CNAME www 192.168.10.5
CNAME www 192.168.10.6
CNAME www 192.168.10.7
CNAME www 192.168.10.8

When you examine the logs for the Web servers, you discover that all incoming traffic is being directed to 192.168.10.5, which is the IP address for WWW1.

You want the incoming traffic to be balanced across the four Web servers. What should you do?
选项 A、Select the Disable recursion check box in the properties of the DNS server.
B、Enable round-robin in the properties of the DNS server.
C、Enable W3C logging in the properties of the Web servers.
D、Install and configure Network Load Balancing on WWW1.
答案B
解析 Explanation: By enabling round robin the DNS server will start to rotate between the CNAME records when it resolves the host name www. This will result in load balancing between the web servers.

Incorrect Answers
A: Disabling recursion would prevent the local DNS server from using other DNS servers. It would not be helpful in configuring load balancing.
Note: A DNS server can query or contact other DNS servers on behalf of the requesting client to fully resolve the name, and then send an answer back to the client. This process is known as recursion.

C: W3C logging would enhance the logging that takes place. This could be useful of security reasons. It would not be helpful for load balancing purposes.

D: Load Balancing must be configured on all the servers that should be load balanced.
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