CompTIA Server+ (SK0-004) — Question 1

A server technician needs to access a remote Unix server for administration. The technician has requested that ports 23, 25, and 161 be opened on the router.
After the ports are opened, the technician is still unable to connect to the Unix server. Which of the following ports should be opened on the server to allow for remote administration?

Answer options

• A. TCP 21
• B. TCP 22
• C. UDP 69
• D. TCP 3389

Correct answer: B

Explanation

The correct answer is B, TCP 22, as it is the port used by SSH for secure remote administration of Unix servers. The other options, such as TCP 21 (FTP), UDP 69 (TFTP), and TCP 3389 (RDP), are not standard ports for remote administration of Unix systems.