CompTIA Network+ (N10-007) — Question 262

Which of the following ports should be open on a host-based firewall for a user who needs email and file-sharing capabilities? (Choose two.)

Answer options

• A. 21
• B. 88
• C. 389
• D. 445
• E. 587
• F. 3389

Correct answer: A, E

Explanation

Port 21 is used for FTP, which is essential for file sharing, while port 587 is used for email submission with SMTP, making both necessary for the specified functions. The other ports either serve different purposes or are not relevant to email and file-sharing needs.