Which of the following is true about the main difference between a web session that uses port 80 and one that uses port 443?
A. Port 80 web sessions often use application-level encryption, while port 443 sessions often use transport-level encryption.
B. Port 80 web session cannot use encryption, while port 443 sessions are encrypted using web certificates.
C. Port 80 web sessions can use web application proxies, while port 443 sessions cannot traverse web application proxies.
D. Port 80 web sessions are prone to man-in-the-middle attacks, while port 443 sessions are immune from man-in-the-middle attacks.
Answer: A. Port 80 web sessions often use application-level encryption, while port 443 sessions often use transport-level encryption.
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