题目内容

The UDP segment includes （）.

A. checksum
B. receive window
C. sequence number
D. acknowledgement number

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The application of ( ) is loss-tolerant.

A. stored audio/video
B. file transfer
C. Web documents
D. text messaging

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Which of the following is the default port number of TCP control connection in FTP?

A. 20
B. 21
C. 25
D. 80

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[ 判断题 ] C1计算机网络与因特网 (2分)Web服务器是一种端系统,FTP服务器不是一种端系统。 ( )

A. 对
B. 错

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[ 单选题 ] C4网络层 (3分)IP地址223.2.5.136的32bit二进制等价形式是( )。 ( )

A. 11011110 00000010 00000101 10001000
B. 11011110 00000010 00000101 10001001
C. 11011111 00000010 00000101 10001000
D. 11011111 00000010 00000101 10001001

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The UDP segment includes （ ）.

A. checksum B. receive window C. sequence number D. acknowledgement number

The application of ( ) is loss-tolerant.

Which of the following is the default port number of TCP control connection in FTP?

[ 判断题 ] C1计算机网络与因特网 (2分)Web服务器是一种端系统,FTP服务器不是一种端系统。 ( )

[ 单选题 ] C4网络层 (3分)IP地址223.2.5.136的32bit二进制等价形式是( )。 ( )

The UDP segment includes （）.

A. checksum
B. receive window
C. sequence number
D. acknowledgement number