Application Layer part5(DNS,MIME,Socket,TCP sockets,UDP Socket)

This lecture includes topic like:
DNS: Domain Name System,Root name servers,DNS example,iterated queries,
caching and updating records,DNS records,DNS protocol, messages,
Sockets,goal,why,Socket API,TCP sockets,Client/server socket interaction,
UDP Sockets,Client/server socket interaction,

 Content Delivery ,ftp commands, responses,email ,Message format,MIME 
types,Mail access protocols,DNS records,TCP sockets,UDP Sockets 
and related example.

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