TCP/IP MODEL

TCP/IP MODEL

What isTcp/Ip model:-

·      It stands for Transmission control/Internet protocol model.

·      Most popular in the History of Networking.

·      Supported by Every computer Operating System.(Microsoft, unix, linux etc.)

·      TCP/IP is maintained in an open forum. Because it is open standard protocol through which all vendors support & follow them. after follow this model product of different -different model establish a networking between them then it is possible because these network use a TCP/IP model.

·      CCNA exams focus heavily on TCP/IP model.

·      It consist 4 layers.

·      TCP/IP model based on DOD (Department of defence)model.

·      It is a implementation model.

1.  Application layer :-

·      This layer is mix up of a three layer of OSI model (application layer, presentation layer , session layer).

·      Defines protocol for node to node application communication & also controls user-interface specifications.

·      There are many protocols :-SMTP,DNS,HTTP etc.

·      It also define that how to data share in different-different computer.

2.  Transport layer:-

·      create reliable end – to-end communication & ensuring the Error-free delivery data.

·      It has a two important protocols :- TCP & UDP.

3.  Internet layer :-

·      Takes care of the addressing of Hosts by giving them an IP (internet protocol)address & handles the routing of packets among multiple networks .

4.  Network access layer:-

·      It is mix up of two layer of OSI model(physical layer & data link layer).

·      Oversees hardware addressing & defines protocol for the physical transmission of data. Monitors the Data Exchange between the host & the network.