The maximum payload of a TCP segment is :
2015
The maximum payload of a TCP segment is :
- A.
65,535
- B.
65,515
- C.
65,495
- D.
65,475
Attempted by 268 students.
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Correct answer: C
Answer: 65,495 bytes.
Explanation:
IPv4 Total Length field is 16 bits, so the maximum IPv4 packet size is 65,535 bytes.
Minimum IPv4 header length (no options) = 20 bytes.
Minimum TCP header length (no options) = 20 bytes.
Maximum TCP payload = 65,535 - 20 - 20 = 65,495 bytes.
Note: If IP or TCP header options are present the available TCP payload will be smaller. This calculation applies to IPv4; IPv6 uses a different header model.