Cisco IOS Overview and Command Modes
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Questions and Answers

What is the primary purpose of Cisco IOS?

  • To provide graphical user interfaces for users.
  • To serve as the operating system for network devices. (correct)
  • To manage web servers.
  • To facilitate database management.

Which command is used to enter global configuration mode?

  • copy running-config startup-config
  • exit
  • configure terminal (correct)
  • enable

Which access method is considered insecure and should be avoided?

  • Telnet (correct)
  • SSH Key Authentication
  • Secure Shell (SSH)
  • Console Port

How can you save your changes to the startup configuration in Cisco IOS?

<p>copy running-config startup-config (A)</p> Signup and view all the answers

What is the prompt for privileged EXEC mode in Cisco IOS?

<p>Switch# (C)</p> Signup and view all the answers

The command used to enter privileged EXEC mode is 'access'.

<p>False (B)</p> Signup and view all the answers

Secure Shell (SSH) provides unencrypted remote access to devices.

<p>False (B)</p> Signup and view all the answers

In Global Configuration Mode, the prompt displays as Switch(config)#.

<p>True (A)</p> Signup and view all the answers

The command 'erase startup-config' is used to save the current configuration to NVRAM.

<p>False (B)</p> Signup and view all the answers

The User EXEC Mode allows for advanced configuration commands.

<p>False (B)</p> Signup and view all the answers

Flashcards

Cisco IOS Purpose

Cisco IOS is the operating system for network devices like routers and switches. It allows you to manage these devices via a command-line interface (CLI).

User EXEC mode

A command mode in Cisco IOS that allows basic viewing of existing configuration but not editing.

Enable command

A command used in the Cisco IOS terminal to move to privileged EXEC mode (giving you more control over the device).

Global Config Mode

This mode allows modifying system-wide settings in Cisco IOS.

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copy running-config startup-config

Saves the current configuration of a Cisco IOS device to NVRAM (Non-Volatile RAM), so it persists even after the device restarts.

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SSH vs Telnet

SSH is a secure encrypted protocol for remote access, while Telnet is unencrypted and should be avoided.

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What is a 'configuration'?

A set of instructions that tells a Cisco device how to operate, including settings for ports, security, and more.

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How to enter Global Config Mode

Use the command 'configure terminal' from Privileged EXEC mode.

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What is the difference between User EXEC and Privileged EXEC modes?

User EXEC mode allows basic viewing of configurations, while Privileged EXEC mode gives you greater control and allows modifications.

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Study Notes

Cisco IOS Overview

  • Cisco IOS is the operating system for network devices like routers and switches.
  • It provides a command-line interface (CLI) for managing devices.

Cisco IOS Command Modes

  • User EXEC Mode: Basic, view-only commands (prompt: Switch>).
  • Privileged EXEC Mode: Advanced commands for configuration and management (prompt: Switch#).
  • Global Configuration Mode: Device-wide settings (prompt: Switch(config)#).
  • Interface Mode: Configures specific ports (e.g., Ethernet interfaces).
  • Line Mode: Configures console, Telnet, and SSH access.

Important Commands

  • enable: Enters privileged EXEC mode.
  • configure terminal: Enters global configuration mode.
  • exit: Moves to the previous mode.
  • end or Ctrl-Z: Exits to privileged EXEC mode.
  • copy running-config startup-config: Saves current configuration to NVRAM.
  • erase startup-config: Removes the saved configuration from NVRAM.

Security Configuration

  • Passwords: Use strong passwords to protect access.
  • Secure privileged EXEC access: Use enable secret [password] for security.
  • Secure console access: Configure console access securely.
  • SSH: Use SSH for encrypted remote access.
  • Telnet: Avoid Telnet, as it is not secure.

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Description

This quiz covers the basics of Cisco IOS, the operating system for network devices, focusing on its command modes and important commands used for configuration. Test your knowledge on User EXEC, Privileged EXEC, and more, along with essential commands for effective device management.

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