SK0-003 · Question #306
Which of the following ports does a telnet application utilize?
The correct answer is B. 23. The Telnet application commonly uses a specific TCP port to establish connections for remote command-line access.
Question
Which of the following ports does a telnet application utilize?
Options
- A21
- B23
- C80
- D443
How the community answered
(24 responses)- A4% (1)
- B96% (23)
Why each option
The Telnet application commonly uses a specific TCP port to establish connections for remote command-line access.
Port 21 is the default port for FTP (File Transfer Protocol).
Telnet, a network protocol used to provide a bidirectional interactive text-oriented communication facility using a virtual terminal connection, primarily operates over Transmission Control Protocol (TCP) port 23.
Port 80 is the default port for HTTP (Hypertext Transfer Protocol).
Port 443 is the default port for HTTPS (HTTP Secure).
Concept tested: Common network port numbers - Telnet
Source: https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml
Topics
Community Discussion
No community discussion yet for this question.