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A transport layer protocol usually has several responsibilities.One is to create a process-to-process communication;UDP uses (7
A transport layer protocol usually has several responsibilities.One is to create a process-to-process communication;UDP uses (7
admin
2019-05-15
53
问题
A transport layer protocol usually has several responsibilities.One is to create a process-to-process communication;UDP uses (71) numbers to accomplish this.Another responsibility is to providecontrol mechanisms at the transport level.UDP does this task at a very minimal level.There is no flowcontrol mechanism and there is no (72) for received packet.UDP, however,does provide errorcontrol to some extent.If UDP detects an error in the received packet,it will silently drop it.
The transport layer also provides a connection mechanism for the processes.The (73) must be able to send streams of data to the transport layer.It is the responsibility of the transport layer at (74) station to make the connection with the receiver,chop the stream into transportable units,numberthem,and send them one by one.It is the responsibility of the transport layer at the receiving end to waituntil all the different units belonging to the same process have arrived,check and pass those that are (75) flee,and deliver them to the receiving process as a stream.
(75)
选项
A、call
B、state
C、cost
D、error
答案
D
解析
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本试题收录于:
网络工程师上午基础知识考试题库软考中级分类
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软考中级
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