试题与答案

For each blank, choose the best answer fro

题型:单项选择题

题目:

For each blank, choose the best answer from the four choices and write down on the answer sheet. (66) is a protocol that a host uses to inform a router when it joins or leaves an Internet multicast group. (67) is an error detection code that most data communication networks use. (68) is an interior gateway protocol that uses a distance vector algorithm to propagate routing information. (69) is a transfer mode in which all types of information are organized into fixed form cells on an asynchronous or non-periodic basis over a range of media. (70) is an identifier of a web page.

70()

A.HTTP

B.URL

C.HTML

D.TAG

答案:

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