题目内容

The port numbers ranging from ____to ____ are called well-known port number and are restricted.

A. 0, 1023
B. 0, 65535
C. 0, 127
D. 0,255

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UDP socket identified by two components, they are ____.

A. source IP addresses and source port numbers
B. source IP addresses and destination IP addresses
C. destination IP address and destination port numbers
D. destination port numbers and source port numbers

TCP socket identified by a (an) ____.

A. 1-tuple
B. 2-tuple
C. 3-tuple
D. 4-tuple

Which of the following applications normally uses UDP services?

A. SMTP
B. Streaming multimedia
C. FTP
D. HTTP

Which of the following is not correct about Go-Back-N protocol?

A. Only using ACK-s
B. Using cumulative ACK-s
C. Receiver discards all out-of-order packets
D. It is not pipelined protocol

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