Which ports does the Apache web server listen on?

• A. 80 and 443
• B. 8080 and 8443
• C. 21 and 443
• D. 22 and 443

Answer: (A)

Web servers use specific ports to offer services. For standard web traffic, HTTP runs on port 80 and HTTPS (secure HTTP) runs on port 443. Apache’s default setup listens on both, enabling either plain HTTP or encrypted HTTPS connections. Other port pairs like 8080 and 8443 are common for non-default configurations or testing, but they are not the default listening ports. Ports 21 and 443 (FTP with HTTPS) or 22 and 443 (SSH with HTTPS) mix different services and aren’t the typical web server configuration.