Lesson 3.4 Unit 3 Data Network Architectures

Cisco IOS

A proprietary operating system used by Cisco hardware, integrating routing, switching, internetworking, and telecommunications functions.

Terminal Emulation

A method used to configure Cisco devices via another device, as Cisco devices have no screen or keyboard.

Console Port

A serial connection port on a Cisco device used to connect for initial configuration.

Telnet

A network protocol used to remotely access devices, including Cisco devices for configuration.

Secure Shell (SSH)

A protocol that provides a secure channel to remotely access and manage devices, including Cisco devices.

Cisco Packet Tracer

A free network simulation tool developed by Cisco that operates similarly to real Cisco devices.

User-EXEC Mode

The initial access mode of the Cisco IOS CLI where basic commands can be executed but configuration commands are restricted.

Privileged-EXEC Mode

A mode in the Cisco IOS CLI that allows access to configuration commands and device settings.

Global Configuration Mode

A mode where users can perform configurations on the Cisco device, including entering specific configuration modes.

RJ-45 Connector

The type of connector used for network cables, including those for connecting to the console port of Cisco devices.

Serial (DB-9) Connector

The type of connector often required to connect a console cable from a computer to a Cisco device.

USB-to-DB9 Adapter

An adapter used when a computer lacks a serial port, allowing has connection to a console cable.