Which port is associated with the Hypertext Transfer Protocol?

Which port is associated with the Hypertext Transfer Protocol?

• A. Hypertext Transfer Protocol (HTTP)
• B. Kerberos—authentication system
• C. Trivial File Transfer Protocol (TFTP)
• D. Network News Transfer Protocol (NNTP)

Answer: (A)

Ports map to the services they carry, and each protocol has a default port. Hypertext Transfer Protocol is the web protocol that traffic uses by default on port 80. HTTPS, which is HTTP over TLS, uses port 443, but that’s a secure variant. The other choices refer to different protocols and their own default ports: Kerberos uses 88, TFTP uses 69, and NNTP uses 119. So the correct match for the protocol associated with the standard web port is Hypertext Transfer Protocol (HTTP). If the question asked for the port number itself, the answer would be 80.

Ports map to the services they carry, and each protocol has a default port. Hypertext Transfer Protocol is the web protocol that traffic uses by default on port 80. HTTPS, which is HTTP over TLS, uses port 443, but that’s a secure variant. The other choices refer to different protocols and their own default ports: Kerberos uses 88, TFTP uses 69, and NNTP uses 119. So the correct match for the protocol associated with the standard web port is Hypertext Transfer Protocol (HTTP). If the question asked for the port number itself, the answer would be 80.