Computer network

Transmission methods

Wired

Optical fibre

Wireless

Mobile connection

Wi-fi technology

TCP/IP communication

Network protocol

TCP

A connection is established and maintained until the application programs at each end have finished exchanging message

IP

Data is sent from one computer to another on the Internet

IP adress

It helps in connecting your computer to other devices on your network and all over the world

Routing

Refers to establishing the routes that data packets take on their way to a particular destination

Gateway

Is a data communication device that provides a remote network with connectivity to a host network.

Types

LAN

Types of elements

Ruoter

Make the connection to the Internet for LANs

HUB

Is commonly used to connect segments of a LANs

Switch

Is able to receive a packet and transmit it to only the destination of the computer

Modem

Allows a computer or another device, such as a router or a switch, to connect to internet

Bus topology

MAN

Ring topology

WAN

Star topology

Is a group of computer systems and devices that are linked together thought channels to facilitate communication among a wide range of users.