Introduction to Computer Networks Budditha Hettige Computer Network ??? •A computer network is an interconnection of a group of computers and the world of computers Why Computer Networks? • Resource Sharing – Sharing a peripheral device (disk, printer, etc.) among several users • Communication – Email, web, Skype, VOIP • Security – Restrict the user access Network Classification • By scale • By connection method • By functional relationship (Network Architectures) • By network topology • By protocol Source: http://www.slideshare.net/MukeshChinta/networks-classification 7/11/2015 Budditha Hettige ([email protected]) 5 Classification of a Computer network by Scale • Personal Area Network (PAN) • Local Area Network (LAN) • Campus Area Network (CAN) • Metropolitan Area Network (MAN) • Wide Area Network (WAN). • Global Area Network(GAN)
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05 Computer Networks - WordPress.com · 2015. 10. 5. · Classification of a Computer network by functional relationship • Active Networking • Client-server networking • Peer-to-peer
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Transcript
Introduction to
Computer Networks
Budditha Hettige
Computer Network ???
• A computer network is an interconnection of a
group of computers and the world of computers
Why Computer Networks?
• Resource Sharing
– Sharing a peripheral device (disk, printer, etc.)
among several users
• Communication
– Email, web, Skype, VOIP
• Security
– Restrict the user access
Network Classification
• By scale
• By connection method
• By functional relationship (Network Architectures)