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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