CompTIA Server+ (SK0-005) Practice Exam 2025 - Free Server+ Certification Practice Questions and Study Guide

For secure remote access to a server, the appropriate port to use is 22. This port is standard for SSH (Secure Shell), which is a protocol designed for secure remote login and other secure network services over an insecure network. When a technician uses SSH, they can connect securely to a server to execute commands, transfer files, and manage the system without exposing sensitive data to potential eavesdropping or attacks.

Port 443 is primarily used for HTTPS (HTTP Secure), which encrypts web traffic and is not specifically designed for remote access. Port 80 is used for unencrypted HTTP traffic, which does not provide any security for remote access. Port 3389 is associated with RDP (Remote Desktop Protocol), which is used for accessing Windows desktop interfaces remotely, but it does not inherently provide the same level of security as SSH unless additional measures are taken for encryption. Therefore, when considering secure remote access to a server, port 22 is the appropriate choice.