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单选题
Your computer is unable to access external names or IP addresses. You need to connect to external Internet resources.  What should you do first?()
A

In a command window, type the ipconfig /displaydns command.

B

In the Network and Sharing Center window, click the View Full Map link.

C

In the Network and Sharing Center window, click the Diagnose and repair link.

D

Configure the DNS server by using an IP address provided by your Internet Service Provider (ISP).


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