Networking Concepts and Commands Quiz

Questions and Answers

How is SSH different from Telnet?

SSH provides security to remote sessions by encrypting messages and using user authentication. Telnet is considered insecure and sends messages in plaintext.

To save time, IOS commands may be partially entered and then completed by typing which key or key combination?

Tab

Why would a technician enter the command copy startup-config running-config?

To copy an existing configuration into RAM.

In order to test end-to-end connectivity, you would use the ______ command.

Ping Signup and view all the answers

What command will prevent all unencrypted passwords from displaying in plain text in a configuration file?

(config)#service password-encryption Signup and view all the answers

Mobile devices do not require IP addresses to communicate on the Internet.

False Signup and view all the answers

Which device acts as a gateway to allow hosts to send traffic to remote IP networks?

Local Router Signup and view all the answers

When a hostname is configured through the Cisco CLI, which three naming conventions are part of the guidelines?

<ol> <li>the hostname should be fewer than 64 characters in length, 2) the hostname should contain no spaces, 3) the hostname should begin with a letter.</li> </ol> Signup and view all the answers

Passwords can be used to restrict access to which modes and interfaces?

VTY interface Signup and view all the answers

Which two functions are provided to users by the context-sensitive help feature of the Cisco IOS CLI?

Determining which option, keyword, or argument is available for the entered command Signup and view all the answers

What can a company do to prevent duplicate IP address errors when a new employee connects to the LAN?

Use DHCP to automatically assign addresses. Signup and view all the answers

Which two statements are true regarding the user EXEC mode?

Only some aspects of the router configuration can be viewed. Signup and view all the answers

What else must be done to apply changes to an interface IP address on an IOS device?

Nothing must be done. Changes take effect as soon as the command is typed correctly. Signup and view all the answers

The component of the operating software that provides the user interface is called the _____

Shell Signup and view all the answers

What is the technician configuring with the commands provided?

SVI Signup and view all the answers

Study Notes

SSH vs. Telnet

SSH encrypts messages and provides user authentication, ensuring secure remote sessions.
Telnet transmits data in plaintext, posing security risks.

Command Completion

Partially entered IOS commands can be completed by pressing the Tab key.

Configuration Commands

The command copy startup-config running-config is used to transfer the startup configuration to RAM.

Connectivity Testing

To test end-to-end connectivity, use the Ping command.

Password Security

Use the command (config)# service password-encryption to prevent unencrypted passwords from displaying in plaintext in configuration files.

IP Address Requirement

All devices communicating over data networks need unique IP addresses; mobile devices are no exception.

Gateways

A local router serves as the gateway, enabling hosts to send traffic to remote IP networks.

Hostname Configuration

Hostnames should adhere to these guidelines:
- Fewer than 64 characters.
- No spaces included.
- Must begin with a letter.

Password Protection in IOS

Passwords can be used to secure the following:
- VTY (Virtual Terminal) interface
- Console interface
- Privileged EXEC mode

Context-Sensitive Help

The Cisco IOS CLI provides help features including:
- A list of available commands in the current mode.
- Options, keywords, or arguments available for the entered command.

Duplicate IP Address Issue

To avoid duplicate IP address errors, use DHCP (Dynamic Host Configuration Protocol) to automatically assign IP addresses.

User EXEC Mode

In user EXEC mode:
- The device prompt ends with the ">" symbol.
- Limited router configuration aspects can be viewed.

Immediate Configuration Changes

Any changes made to an IOS device's configuration take effect immediately upon pressing the Enter key after inputting the command.

Operating System Component

The user interface component of the operating software is referred to as the Shell.

Switch Configuration

The commands used in the example configure a Switched Virtual Interface (SVI) with an IP address of 192.168.1.1 and a subnet mask of 255.255.255.0.

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Description

Test your knowledge on essential networking concepts and commands, including SSH, Telnet, and configuration commands for routers. This quiz covers topics such as connectivity testing, password security, and hostname guidelines, helping you understand the critical aspects of network management.