Cisco IOS Overview and Command Modes

What is the primary purpose of Cisco IOS?

Which command is used to enter global configuration mode?

Which access method is considered insecure and should be avoided?

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

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

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

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

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

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

The User EXEC Mode allows for advanced configuration commands.

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.

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.