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【判断题】
传输层有一个重要的功能就是复用和分用A.
正确
B.
错误
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】____no need for us to discuss the problem again since it has already been solved.
A.
It has
B.
There has
C.
We have
D.
There is
【单选题】_______for us to discuss the problem again.It has already been settled. [ ]
A.
It has no doubt
B.
There has no doubt
C.
It is no need
D.
There is noneed
【单选题】主机甲和主机乙之间建立了TCP 连接,主机甲向主机乙发送了两个连续的TCP段,分别包含300 字节和500 字节的有效载荷,第一个段的序列号为200,主机乙正确收到两个段后,发送给主机甲的确认序列号是( ) A .500 B.700 C.800 D.1000
A.
B.
C.
D.
D
【单选题】主机甲和主机乙之间已经建立了一个TCP连接，TCP最大段的长度为1000字节，若主机甲当前的拥塞窗口为4 000字节，在主机甲向主机乙连续发送2个最大段后，成功收到主机乙发送的第一段的确认段，确认段中通告的接收窗口大小为2 000字节，则此时主机甲还可以向主机乙发送的最大字节数是( )。
A.
1 000
B.
2 000
C.
3 000
D.
4 000
【单选题】___ no need for us to discuss the problem again. It has already been settled.
A.
It has
B.
There has
C.
It is
D.
There is
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