Palo Alto Networks Certified Cybersecurity Associate (PCCSA) — Question 21

Which well-known port is associated with the Simple Mail Transfer Protocol?

Answer options

• A. 143
• B. 25
• C. 997
• D. 40

Correct answer: B

Explanation

The correct answer is B, as port 25 is the standard port used by the Simple Mail Transfer Protocol (SMTP) for sending emails. Options A, C, and D represent other services; port 143 is used for IMAP, port 997 is for secure POP3, and port 40 is not commonly associated with any well-known protocol.