300-440 Question 255
Single answerA network administrator is tasked with securing remote management access to a Cisco router. The administrator needs to ensure that communication between the administrator's device and the router is encrypted. Which protocol should the administrator use?
- A
Telnet
- B
HTTP
- C
HTTPS
- D
SSH
Show answer and explanation
Correct answer: D
Explanation
To secure remote management access to a Cisco router, the administrator should use SSH. Unlike Telnet, SSH encrypts all transmitted data, including credentials, preventing interception by unauthorized parties. HTTP and HTTPS are primarily used for web-based communication, with HTTPS providing encryption but not being suitable for CLI-based remote management.
- A. Incorrect.
Telnet transmits data, including credentials, in plaintext, making it insecure for remote management.
- B. Incorrect.
HTTP does not provide encryption and is not designed for secure communication, making it unsuitable for this task.
- C. Incorrect.
HTTPS is used for secure web communication but is not typically used for remote management of Cisco devices.
- D. Correct.
SSH provides encrypted communication and is specifically designed for secure remote management of network devices.