This document discusses network concepts and wireless technologies. It defines a network as a group of computers connected to each other that allows sharing of resources. The main advantages of networks are easy communication even from different locations, sharing of files and resources, and reduced costs. It also describes different wireless technologies like Bluetooth and WiFi. WiFi provides high-speed internet access and allows mobile phones to connect to each other. The key benefits of WiFi include sharing internet access, resources, listening to music, live streaming video, and printing/scanning.

1. CH-4
4.NETWORK CONCEPTS
BY
YOUSUF VALI

2. CONTENTS
 WHAT IS NETWORK
 WHY NETWORK
 ADVANTAGES OF NETWORK
 WIRELESS TECHNOLOGY
 TYPES OF WIRELESS
 BLUETOOTH
 WIFI
 ADVANTAGES OF WIFI

3. WHAT IS NETWORK
 A NETWORK IS A GROUP OF
COMPUTERS CONNECTED EACH
OTHER.

4. WHY NETWORK
THE NETWORK ALLOWS US TO
SHARE THE RESOURCES WITH
DIFFERENT USERS ON DIFFERENT
COMPUTERS.

5.  COMMUNICATION : EASY TO COMMUNICATE
WHEN WE ARE IN DIFFERENT
GEOGRAPHICAL PLACES.
 SHARE RESOURCES : WE CAN SHARE OUR
FILES.
 COST EFFECTIVE : THE N/W SAVES THE
COST OF PURCHASING RESOURCES TO
ALL COMPUTERS.
BENEFITS OF NETWORK

6. WIRELESS TECHNOLOGY
 WIRELESS COMMUNICATION USES INFRARED
SIGNALS
 IT ALSO USES WIRELESS ADAPTOR
EXAMPLES:
 CELLULAR PHONES & PAGERS
 GPS
 LAN
 SATELLITE TELEVISION

7. TYPES OF WIRELESS
 FIXED WIRELESS: SYSTEMS IN HOMES,
OFFICES ARE CONNECTED TOO INTERNET VIA
MODEMS.
 MOBILE WIRELESS: MOBILES CAN BE
CONNECTED TO INTERNET VIA WIFI

8. BLUETOOTH
 BLUETOOTH IS AN ELECTRONIC GADGET
 IT IS USED TO SHARE INFORMATION
WIRELESSLY
 IT IS COMMONLY USED IN TV’S, REMOTE,
KEYBOARD, MOUSE, PHONES.

9. WIFI
 IT PROVIDES HIGH SPEED INTERNET
CONNECTION
 ALL MOBILE PHONES HAVE THIS WIFI
TECHNOLOGY, SO THAT ONE CAN CONNECT
TO ANOTHER

10. ADVANTAGES OF WIFI
 SHARE YOUR INTERNET
 SHARE RESOURCES
 LISTEN TO MUSIC
 LIVE STREAM VIDEO
 PRINTING & SCANNING

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