CompTIA A+ 220-902 Question F-59

While configuring a new email application that uses POP3 for a customer, the technician determines the firewall is blocking the traffic. Which of the following ports should be opened to allow POP3 mail traffic through the firewall?

A. 53
B. 110
C. 443
D. 3389

Correct Answer: B

Explanation:
http://www.speedguide.net/port.php?port=110