Multiple choice general knowledge science & technology When you type URL "https"… which port will active during your web session? 139 443 80 21 Reveal answer Fill a bubble to check yourself B Correct answer Explanation HTTPS uses port 443 by default for secure, encrypted web communication. Port 80 is for standard HTTP, port 21 is for FTP, and port 139 is for NetBIOS session service. The 's' in HTTPS indicates a secure connection on port 443.