某电子商务网站服务器域名为www.test.com，有用户使用电脑无法访问该网站，该用户使用“Ping服务器IP地址”的方式测试正常，但通过域名依然无法连接，此时可能出现的问题是（ ）。
- A.线路故障
- B.网卡故障
- C.路由故障
- D.域名解析故障
正确答案及解析
正确答案
解析
本题考查网络的运维的基础知识。
ping也属于一个通信协议，是TCP/IP协议的一部分。利用“ping”命令可以检查网络是否连通，可以很好地帮助我们分析和判定网络故障。
Ping服务器IP地址测试正常，表明用户机与服务器连接正常，即网卡、线路、路由都没有故障，题干给出但通过域名依然无法连接，此时极可能出现的问题是域名解析故障。
综合分析，本题选D。
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