Cisco Networking Basics Quiz

Cisco Packet Tracer

• Platform for network simulation
• IOS (Internetwork Operating System):
  • Multitasking operating system used in most Cisco routers and switches
  • Has a Command-Line Interface (CLI) with predetermined commands
• Network Equipment Dependency: All network equipment depends on the operating system.

Shell

• User interface, used to request specific tasks from the computer
• Tasks are performed through CLI (Command Line Interface) or GUI (Graphical User Interface)
• Manages communication between hardware and software.
• Manages hardware resources to meet software requirements

Kernel

• Manages communication between hardware and software
• Manages hardware resources

Hardware

• Physical components of a computer.
• Memory Types:
  • ROM (Read Only Memory): Cannot be altered, responsible for booting.
  • RAM (Random Access Memory): Running configuration; loses content when restarting.
  • Flash Memory: Stores IOS images, other files.
  • NVRAM (Non-Volatile Random Access Memory): Stores startup configuration files and retains content on restart.

Common Accesses on IOS

• Console Access:
  • Used to configure newly acquired devices
  • Does not require an IP address
  • Cannot be accessed through a network
• Telnet Access:
  • A common way to access a network device remotely
  • Uses a terminal emulation program
  • Allows for remote configuration of IOS devices.
• SSH (Secured Shell):
  • Remote access similar to Telnet
  • Uses public-key cryptography for security

Connect Devices

• Device LEDs:
  • Indicate device status
  • Examples like Cisco 1941 LEDs provide status information

IOS Access Methods

• Console: Direct connection for configuration
• Auxiliary: Another connection method for configuration
• Virtual Terminal: Telnet/SSH for remote access
• Terminal Emulation Programs: Software to connect to devices remotely (e.g., PuTTY, Tera Term).
• Secure CRT: A specific terminal emulation program for remote access.