[单选]
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）.

具有完整规划的建筑小区，小区内道路宽阔，建筑物的间距较大。其管道的埋深根据相关规定，管顶最小覆土深度宜按照人行道下（）m、车行道下（）m进行设计 0.6，0.7。 0.8，0.7。 0.7，0.6。 0.7，0.8。货币头寸所以被作为金融市场交易工具，是由金融管理当局实行（）制度引起的。 “五级”分类的方法只适用于商业银行的贷款业务。 Refer to the exhibit. This shows the NetFlow statistics for a router. You are analyzing the traffic pattern and you are interested in the percentage of packets between 32 and 64 bytes in size and the number of flows in progress. Which of these identifies both numbers correctly?（） 69.4%, 4061。 24.9%, 980。 69.4%, 35。 6.94%, 980。 cannot be determined from this output。当事人不服边防检查站依照《边防检查条例》作出的行政处罚决定，可以向上一级公安边防部门提出行政复议，对复议决定不服的，可以自接到复议决定书之日起（）天内，向人民法院提起诉讼。 15。 30。 60。 90。

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

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

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