题目内容

API means ( ).

Application Program Interface
B. Application Process Interface
C. Appellation Program Interface
D. Appellation Process Interface

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One host can be running many network applications, so the system assigns them different ( ) to distinguish each other.

A. IP address
B. port number
C. hostname
D. section

The port number of the mail server is ( ).

A. 25
B. 20
C. 80
D. 8080

Look the URL http://www.djtu.edu.cn/rjxy/index.html, the object's path name is ( ).

A. www.djtu.edu.cn
B. www.djtu.edu.cn/rjxy
C. /rjxy/index.html
D. index.html

OSI/RM体系结构、TCP/IP体系结构、原理体系结构的分层数量分别为

A. 4,5,6
B. 5,6,7
C. 7,4,5
D. 7,6,5

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