Module 2 - Basic Switch and End Device Configuration

Question 1

Telnet

Answer 1

Telnet is an insecure, in-band method of remotely establishing a CLI session, through a virtual interface, over a network. Unlike SSH, Telnet does not provide a secure, encrypted connection and should only be used in a lab environment. User authentication, passwords, and commands are sent over the network in plaintext. The best practice is to use SSH instead of Telnet. Cisco IOS includes both a Telnet server and Telnet client.

Question 2

Console

Answer 2

This is a physical management port that provides out-of-band access to a Cisco device. Out-of-band access refers to access via a dedicated management channel that is used for device maintenance purposes only. The advantage of using a console port is that the device is accessible even if no networking services are configured, such as performing the initial configuration. A computer running terminal emulation software and a special console cable to connect to the device are required for a console connection.

Question 3

Secure Shell (SSH)

Answer 3

SSH is an in-band and recommended method for remotely establishing a secure CLI connection, through a virtual interface, over a network. Unlike a console connection, SSH connections require active networking services on the device, including an active interface configured with an address. Most versions of Cisco IOS include an SSH server and an SSH client that can be used to establish SSH sessions with other devices.

Question 4

AUX Port

Answer 4

Some devices, such as routers, may also support a legacy auxiliary port that was used to establish a CLI session remotely over a telephone connection using a modem. Similar to a console connection, the AUX port is out-of-band and does not require networking services to be configured or available.

Question 5

Which access method would be the most appropriate if you call your manager to tell him you cannot access your router in another city over the internet and he provides you with the information to access the router through a telephone connection?

Answer 5

Aux

Question 6

Which access method would be most appropriate if you were in the equipment room with a new switch that needs to be configured?

Answer 6

Console. Requires special cable.

Question 7

Line Configuration Mode

Answer 7

Used to configure console, SSH, Telnet, or AUX access.

Question 8

Interface Configuration Mode

Answer 8

Used to configure a switch port or router network interface.

Question 9

Which two commands would return you to the privileged EXEC prompt regardless of the configuration mode you are in? (Choose two.)

Answer 9

CRTL+Z, end

Question 10

Device Name Restrictions

Answer 10

Start with a letter
Contain no spaces
End with a letter or digit
Use only letters, digits, and dashes
Be less than 64 characters in length