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CS6551 Computer Networks Lecture Notes - SCE Edition

Anna University , Chennai
Department of B.E Computer Science Engineering
Fourth Semester
CS6551 Computer Networks
Lecture Notes - SCE Edition
(Regulation 2013)

Building a network – Requirements - Layering and protocols - Internet Architecture –Network software – Performance ; Link layer Services - Framing - Error Detection – Flow control.


A network is a set of devices connected by a media link. Devices often referred to as nodes can be a computer, printer, or any other devices capable of sending/ receiving data. 
Distributed processing: 
Here tasks are divided among multiple computers. Each separate computer handles a subset. 

1. Security/ Encapsulation 
2. Distributed database 
3. Faster problem solving 
4. Security through redundancy 
5. collaborative processing 

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