CERTIFIED-IN-CYBERSECURITY Question #780: Real Exam Question with Answer & Explanation

The correct answer is A: 25. The Simple Mail Transfer Protocol (SMTP) is well-known for accepting connections on port 25, so as to receive unencrypted email messages. The more secure alternative is to use port 587 for SMTP by using Transport Layer Security (TLS), which encrypts the data between the mail clie

Network Security

Question

Which port number corresponds to the Simple Mail Transfer Protocol (SMTP)?

Options

A25
B22
C161
D69

Explanation

The Simple Mail Transfer Protocol (SMTP) is well-known for accepting connections on port 25, so as to receive unencrypted email messages. The more secure alternative is to use port 587 for SMTP by using Transport Layer Security (TLS), which encrypts the data between the mail client and the server (see ISC2 Study Guide, chapter 4, module 1).

Topics

#SMTP#Port Numbers#Network Protocols#Common Ports

Community Discussion

No community discussion yet for this question.

Full CERTIFIED-IN-CYBERSECURITY Practice Browse All CERTIFIED-IN-CYBERSECURITY Questions