CompTIA Network+ (N10-009)Networking ConceptsEasy
A technician configures a web server to encrypt all client-browser traffic using TLS. Which well-known port does the server use to accept these secure HTTP connections?
- A80
- B8080
- C443
- D22
Show answer & explanationAnswer & explanation
Correct answer: C. 443
HTTPS uses TCP port 443 to carry encrypted HTTP traffic protected by TLS. Port 80 is unencrypted HTTP, 8080 is a common alternate HTTP proxy port, and 22 is used for SSH.
Why the other options are wrong
- A. Port 80 is plain unencrypted HTTP.
- B. Port 8080 is often used as an alternate HTTP or proxy port, not the standard HTTPS port.
- D. Port 22 is used for SSH remote administration.
HTTPS (Port 443)
HTTPS is HTTP secured with TLS/SSL encryption, using TCP port 443 by default.
- TCP port 443
- Encrypts data in transit with TLS
- Protects confidentiality and integrity of web traffic
Memory trick: '443, lock the door' – HTTPS locks web traffic at port 443.