COMPUTER NETWORKS

COMPUTER NETWORKS

INTRODUCTION:
A computer network is a group of interconnected computers
A collection of computers and devices connected to each other.
Allows computers to communicate with each other and share resources and information.
 
Building a Network
To build a network
  Identify the set of constraints and requirements based on
  Application programmer
  Network designer
  Network provider

Requirements:
Connectivity  
point to point or multiple access
Links  -  physical medium
Nodes,clouds  -  computer
Switched Network
Circuit Switched
Packet Switched
Uses store and forward
stablishes dedicated circuit
More efficient in working
Routing
Provides Systematic procedure for forwarding messages
Unicasting
Multicasting
Cost effective Resources sharing
  How system resource is shared effectively  by multiple users
  multiplexing
Multiplexing methods
STDM  - Synchronous time division multiplexing
FDM  -  Frequency division multiplexing

 
  

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