The port number used by FTP is ____.
A. 20 and 21
B. 20
C. 21
D. 53
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A UDP socket identified by a ____ tuple(s).
A. 2
B. 4
C. 1
D. 3
A TCP socket identified by a ____ tuple(s).
A. 2
B. 4
C. 1
D. 3
A TCP socket does not include____.
A. Source MAC address
B. Source port number
C. Destination IP address
Destination port number
Which of following about UDP is not correct.
A. It is a reliable data transfer protocol
B. It is connectionless
C. no handshaking between UDP sender, receiver
D. it is a best effort service protocol
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