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prakashn27/Networking.md

Last active March 21, 2017 14:57
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Networking.md

Layers:

https://www.youtube.com/watch?v=l_OPR2yh2co
All people seems to need data processing

Application Layer:

Network aware applications eg browser

Presentation Layer:

Present the data in understandable form, data conversion, encryption services

Sessions Layer:

Creates and maintain sessions

Transport layer:

Data Breaks into managable segment Reliable communication TCP Unreliable UDP Creates port numbers

Network Layer:

Add network later header: called packet Ipaddressing Finds the best path

Data Link Layer:

Add datalink header: called frame Mac (media access controller) addressing Every network interface has mac address, can not be changed. Error checking

Physical layer:

Data unit: Bit

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