UGC-NET | UGC NET CS 2015 Jun – III | Question 30

The maximum payload of a TCP segment is:
(A) 65,535
(B) 65,515
(C) 65,495
(D) 65,475


Answer: (C)

Explanation: In TCP segment maximum size of TCP window is 65,535 byte;
Minimum TCP header size is 20 byte and Maximum TCP header size is 60 Byte and Minimum IP header size is 20 byte long and Maximum TCP header size is 60 byte rest is payload value.
Maximum payload value = window size – Min Header size(TCP + IP)
Maximum payload value = 65535 – (20 + 20).
Maximum payload value = 65535 – 40
Maximum payload value = 65495.
So, option (C) is correct.

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