A network is a group of computers connected together either physically through a cable or through a wireless device
for the purpose of sharing various computer software and hardware resources ,and files .
different types of Networks
LAN Local Area Network
MAN Metropolitan Area Networks
WAN Wide Area Network
VPN Virtual Private Network
WANs normally connect multiple LANs they build in large and many number of computer connected in WAN .
The hub allows multiple computers and devices to connect via network
some of the uses of computer networking
1) to share internet connection or resources computer .
2) to share printer
3) Access shared files and folders .
4) you can also play games .
5) share CD rom / or other device
there are different types of networking technologies . phone line , power line , Ethernet ,and wireless -based ..
TCP/IP protocols used in networking .
Client-server networks are common in business and peer-to-peer networks common in home computers
peer-to-peer network does not have a central server and consists of two or more computers connecting through Hub .it allows multiple computers and devices to connect via network cable..
Client/server networks are networks that connect individual computers, known as clients and one or more central computers, called servers..
What is a Server ?
Any desk top computer can acts as server but it need some extra capabilities like high processing speed to process multiple requests from client computers .needs large amout of RAM , fast Network cards , and you need software ( operating systems ) like Win NT ,Win 2000 server , win2003 , Linux , Novell ( Net work operating systems ) .
Networks can be wired and wire-less . in wired networks CAT cables /twisted-pair Ethernet cables
are used for connecting the computers through Hubs
For wire less Wi-Fi Hotspots set up for signaling in public places .
and Bluetooth technology allows Handhelds , cell phones , Laptops to connect Internet
.
WLAN ( wireless Local Area Networks )
wireless routers , wireless Antennas , Wireless Signal boosters , Wire less Networks adapters ,access points are part wireless Networks ..
some of common topologies of computer networks are Star, bus , ring type ..
Internet connection sharing can be done in three ways software based broadband routers, and multi-ip solutions..
Different types of Hubs used in networking :
1) Standalone Hubs
2) Stackable Hubs
3) Modular Hubs
