1.

The sizes of source and destination port address in TCP header are ___________ respectively.(a) 16-bits and 32-bits(b) 16-bits and 16-bits(c) 32-bits and 16-bits(d) 32-bits and 32-bitsThis question was addressed to me in an online interview.My question is from TCP-2 in portion Transport Layer of Computer Network

Answer»

The CORRECT choice is (B) 16-bits and 16-bits

The best explanation: All PORT addresses are of 16 bits and they specify the type of service being used by the network entity. For example, port 21 is used for FTP connections and port 25 is used for ICMP connections.



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