Computer Networks and Internet Basics

A computer network is a collection of random devices that do not communicate.

A computer network is a system of interconnected computers and devices that can communicate and share resources.

A computer network is a single computer that operates independently.

A computer network is a type of software used for programming.

FTP

SMTP

HTTP

POP3

32 bits

128 bits

64 bits

16 bits

Switch

Hub

Modem

Router

To store user passwords securely.

To translate domain names into IP addresses.

To provide web hosting services.

To manage network traffic efficiently.

Large Area Network

Longitudinal Area Network

Local Access Network

Local Area Network

Network layer (Layer 3)

Transport layer (Layer 4)

Application layer (Layer 7)

Presentation layer (Layer 6)

To enhance internet speed and performance.

To store user data securely.

To control network traffic and protect against unauthorized access.

To provide wireless connectivity to devices.

Virtual Protected Network

Virtual Public Network

Virtual Private Network

Variable Private Network

Ring topology

Bus topology

Star topology

Mesh topology