DV Chapter 2

Question 1

What are the features and functions of the Cisco IOS?

Answer 1

The Cisco IOS allows users to use keyboard commands to run CLI based networking programs and view outputs on a monitor.

Question 2

What is the purpose of the Cisco IOS?

Answer 2

Allows you to configure routers and switches directly

Allows you to set up a network that isn’t currently connected via directly plugging into devices with a console cable.

Allows you to directly communicate with devices using keyboard commands.

Question 3

Explain the difference between Telnet and SSH (Secure Shell) connections.

Answer 3

SSH Is a a remote, in band connection to the CLI. Used for creating virtual interfaces over a network.

Telnet is a less secure physical connection to the CLI. Does not provide an encrypted secure connection and should only be used in secure environments.

Question 4

Define User Exec Mode.

Answer 4

User exec is commonly referred to as the “View Only” mode, as you have an extremely limited number of commands. This is the first mode you are put into when you enter the CLI.

Question 5

Define Privileged Exec mode.

Answer 5

Privileged Exec mode is the next step up after User Exec. It is activated with the command “enable” and shown by having a # next to your device name (ex. router#)

Allows access to all commands and features in the cisco IOS. You can execute management commands and monitoring commands as well.

Question 6

Describe the overall command structure of the Cisco IOS software.

Answer 6

Prompt, command space keyword / argument.

Question 7

How do devices communicate over network media?

Answer 7

They communicate through their specific unique IP and MAC addresses. Without those they would never be able to distinguish between each other.