Which of the following port numbers could appear in the sour

Which of the following port numbers could appear in the source port field of a TCP header leaving a requesting system?

A. 1022

B. 1023

C. 49172

D. 80

C is correct. Source port numbers from a requesting machine are dynamic and must not be from the well-known port range 0–1023.

A, B, and D are incorrect. All these answers are from the well-known port range, which cannot be used here.