In Client-Server architecture, the clients visit the server's through( ).
A. client’s socket
B. client’s IP address
C. server’s socket
D. server’s IP address
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( )can be thought of as a program that is running within end system.
A. process
B. thread
C. socket
D. context
API means ( ).
Application Program Interface
B. Application Process Interface
C. Appellation Program Interface
D. Appellation Process Interface
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
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