CompTIA Server+ (SK0-005) — Question 89

An administrator is configuring a host-based firewall for a server. The server needs to allow SSH, FTP, and LDAP traffic. Which of the following ports must be configured so this traffic will be allowed? (Choose three.)

Answer options

• A. 21
• B. 22
• C. 53
• D. 67
• E. 69
• F. 110
• G. 123
• H. 389

Correct answer: A, B, H

Explanation

Ports 21, 22, and 389 are necessary for the specified services: FTP uses port 21, SSH uses port 22, and LDAP operates on port 389. The other options (C, D, E, F, G) correspond to different protocols and are not required for the services mentioned.