Computer Networking Concepts

Front

Input

Back

Data from users or attached devices

Front

Output

Back

Data sent out from the device after processing

Front

CPU

Back

Central Processing Unit, known as the “brains of the computer”. It performs all functions to run the operating system, software and input/output controls.

Front

Compiler

Back

Converts the computer language into machine code, aka binary.

Front

LAN

Back

Devices connected inside a home, office, building, or small geographic area for LOCAL sharing of resources such as files, printers, applications, etc.

Front

WAN

Back

Devices connected across a wide geographic area. Usually, a collection of connected LANs.

Front

Switch

Back

Sends the message only to the destination device in the LAN

Front

Hub

Back

Sends the message to everybody

Front

Wireless Access Point

Back

A switch without wires

Front

Router

Back

Sends the message only to the destination device in the LAN or in the WAN