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Many students who study using our platform have reported that a large number of the practice questions here are very similar to those that appear in real exams. View Courses
Many students who study using our platform have reported that a large number of the practice questions here are very similar to those that appear in real exams. View Courses
A technician is configuring a server that requires secure remote access. Which of the following ports should the technician use?
Correct Answer: B. 22
Port 22 is used for Secure Shell (SSH), which provides encrypted and secure remote access to servers. SSH ensures that login credentials and session data are transmitted securely over the network, protecting against eavesdropping and man-in-the-middle attacks. It is the standard protocol for administrators managing servers remotely through a command-line interface and is widely adopted in Linux and UNIX-based environments for secure, authenticated remote administration.
Why Other Options are Incorrect:
A. 21
Port 21 is used for FTP (File Transfer Protocol), which transmits data in plaintext. It does not provide encryption or secure remote access, making it unsuitable for managing servers or protecting sensitive data during transmission.
C. 23
Port 23 is used for Telnet, which offers remote access but transmits all data, including passwords, in plaintext. It lacks encryption and is considered insecure, so it has been largely replaced by SSH for secure remote connections.
D. 443
Port 443 is used for HTTPS, which secures web traffic in browsers. While it encrypts data, it is not used for remote server access via command line. It’s meant for secure website communication, not administrative tasks like SSH.
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