Introduction to network

Chapter no 01

By: Shaheen

To share

Networks A network is a collection of computers and devices

connected together

p. 8

ResourcesHardware

devices Software programs Data To save

time and

money

Information

Next

What is Network and Networking

Network: Two Device or more than two Device are join to gatherBut There is nothing of sharing is called network----------------Networking:Between All that devices there are sharing of Resources is called networking

Why We need NetworkThe following are the important benefits of a computer network.File sharing: Networking of computers helps the users to share data files. Hardware sharing: Users can share devices such as printers, scanners, CD-ROM drives, hard drives etc.Application sharing: Applications can be shared over the network, and this allows to implement client/server applicationsUser communication: Networks allow users to communicate using e-mail, newsgroups, and video conferencing etc. Network gaming: A lot of network games are available, which allow multi-users to play from different locations

Network is Divided into two parts

Physical Logical

Client/server

P2P/Peer 2 peer

LAN

MAN

WAN

PAN

CAN

One early solution was the creation of local-area network (LAN) standards which provided an open set of guidelines for creating network hardware and software, making equipment from different companies compatible.

What was needed was a way for information to move efficiently and quickly, not only within a company, but also from one business to another.

The solution was the creation of metropolitan-area networks (MANs) and wide-area networks (WANs).

LANs, MANs, & WANs

LAN Components Switch Layer 2 Router

MAN Components Cisco Router or other company router

WAN Components Wireless Router

Network

Physical Logical

Client/server

P2P/Peer 2 peer

LAN

MAN

WANCCNA

N+

MCITPMCSE 2012

Network components

HUB: A device that connects two local-area networks (LANs), or two segments of the same LAN that use the same protocol, such as

1)HUB2)SWITCH3)ROUTER4)Bridge

For Each components you have to know three things…….1)Why we use ?.........2)What are the advantages.........3)what are the Disadvantages

if you know these three things than you have completed knowing of that Components

HUB

HUB