Question
Which of the following commands would you execute if you wanted to enable others to establish a Telnet session on a Cisco router?

A. Certkiller 1(config)# line console 0
Certkiller 1(config-if)# enable password Certkiller


B. Certkiller 1(config)# line vty 0
Certkiller 1(config-line)# enable password Certkiller


C. Certkiller 1(config)# line vty 0
Certkiller 1(config-line)# enable secret Certkiller
Certkiller 1(config-line)# login


D. Certkiller 1(config)# line console 0
Certkiller 1(config-line)# enable secret Certkiller
Certkiller 1(config-line)# login


E. Certkiller 1(config)# line console 0
Certkiller 1(config-line)# password Certkiller
Certkiller 1(config-line)# login


F. Certkiller 1(config)# line vty 0
Certkiller 1(config-line)# password Certkiller
Certkiller 1(config-line)# login
Answers
F
Explanation: Telnet sessions use virtual terminal sessions, which are configured under the "line vty" portion of the configuration. There are 5 total vty sessions that can be configured, numbered 0-4. In order to be prompted for a password, one must be configured. Choice F gives the 3 commands needed to allow a single telnet session.

Incorrect Answers:
A, B, C, D. The telnet password needs to be configured in addition to the enable password. Without the initial password configured, users that try to telnet to the router will receive a "password required, but none set" message.
D, E. Telnet uses VTY ports, not the console port.   Your Comment




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