OSI MODEL

OPEN SYSTEM INTERCONNECTION MODEL

1-PHYSICAL LAYER
2-DATALINK LAYER
2-NETWORK LAYER
4-TRANPORT LAYER
5-SESSION LAYER
6-PRESHeader and ENTATION LAYER
7-APPLICATION LAYER

 



1-PHYSICAL LAYER:-Physical Layer is first layer of OSI Model,It is used to established and terminate connection.

2-DATALINK LAYER-In this layer Header and Trailer is added to the data ,Header contains source MAC Address and destination address.
Trailer contains FCS(frame Check sequence)

3-NETWORK LAYER:-Network layer adds to data to Header that Includes only IP address of source and destination.

4-TRANSPORT LAYER:-To deliver the packet to correct process.(Service point addressing)

5-SESSION LAYER:-This layer established synchronize manages and terminates to the connection and session between two commuters.

6-PRESENTATION LAYER:-The presentation layer established context between application layer entries,In which the application layer entries may be different syntax and semantics.

7-APPLICATION LAYER:-
   a-FTP
   b-TELNET
   c-HTTP
   d-DNS
   e-SMTP
   f-DHCP

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