Securing Email with Cisco Email Security Appliance (SESA) — Question 35

What is the default behavior of any listener for TLS communication?

Answer options

• A. preferred-verify
• B. off
• C. preferred
• D. required

Correct answer: B

Explanation

The default setting for a TLS communication listener is 'off', meaning that TLS is not enforced unless explicitly configured. The other options, such as 'preferred', 'preferred-verify', and 'required', indicate varying levels of TLS enforcement which do not apply by default.