URL consists of three parts: the protocol(75), the DNS name of the host (www.csai.cn) and

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URL consists of three parts: the protocol(75), the DNS name of the host (www.csai.cn) and the file name (index.html).

A.IP

B.UDP

C.TCP

D.HTTP

参考答案:

D解析:参考译文:URL由三个部分组成:HTTP协议、主机的DNS名(如www.csai.cn)和文件名(index.html)。

软考初级