In a TCP header, how many bits is the Source Port Number?

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Multiple Choice

In a TCP header, how many bits is the Source Port Number?

Explanation:
In a TCP header, the port numbers are each 16 bits long. The Source Port Number is represented by a 16-bit field (along with a 16-bit Destination Port Number) at the very start of the header. This allows 65,536 possible values (0 to 65535) for identifying the sending process on the source host. Using any larger size would not align with the protocol specification, while 16 bits is the established width for port identification in TCP.

In a TCP header, the port numbers are each 16 bits long. The Source Port Number is represented by a 16-bit field (along with a 16-bit Destination Port Number) at the very start of the header. This allows 65,536 possible values (0 to 65535) for identifying the sending process on the source host. Using any larger size would not align with the protocol specification, while 16 bits is the established width for port identification in TCP.

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