200-301 · Question #706
What are two characteristics of Telnet? (Choose two.)
The correct answer is A. It sends data in clear text format. E. It requires that the destination device be configured to support Telnet connections.. Telnet is an insecure network protocol that transmits all data, including credentials, in clear text, making it vulnerable to eavesdropping. To establish a Telnet connection, the destination device must have a Telnet server configured and enabled.
Question
Options
- AIt sends data in clear text format.
- BIt is no longer supported on Cisco network devices.
- CIt is more secure than SSH.
- DIt requires an enterprise license in order to be implemented.
- EIt requires that the destination device be configured to support Telnet connections.
How the community answered
(32 responses)- A91% (29)
- C3% (1)
- D6% (2)
Why each option
Telnet is an insecure network protocol that transmits all data, including credentials, in clear text, making it vulnerable to eavesdropping. To establish a Telnet connection, the destination device must have a Telnet server configured and enabled.
Telnet sends all data, including usernames and passwords, in clear text (unencrypted) over the network, making it highly susceptible to packet sniffing.
While highly discouraged due to security concerns, Telnet is still supported on many Cisco network devices for backward compatibility or specific isolated environments, though often disabled by default.
Telnet is significantly less secure than SSH because SSH encrypts all communication, whereas Telnet sends it in clear text.
Telnet is a basic, open standard protocol and does not typically require an enterprise license on networking devices for its implementation.
For a device to accept Telnet connections, it must be explicitly configured as a Telnet server, enabling it to listen for and respond to incoming Telnet requests.
Concept tested: Telnet characteristics and security
Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/security/a1/sec-a1-cr-book/sec-a1-cr-book_chapter_0110.html
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