CompTIA Network+ (N10-007) — Question 114

A network administrator configures an email server to use secure protocols. When the upgrade is completed, which of the following ports on the firewall should be configured to allow for connectivity? (Choose three.)

Answer options

• A. TCP 25
• B. TCP 110
• C. TCP 143
• D. TCP 389
• E. TCP 587
• F. TCP 993
• G. TCP 995

Correct answer: E, F, G

Explanation

The correct ports for secure email communication are TCP 587 (SMTP with STARTTLS), TCP 993 (IMAP over SSL), and TCP 995 (POP3 over SSL). Ports TCP 25, 110, 143, and 389 are used for non-secure or different types of communication that do not provide the same level of security as the selected ports.