What is TCP/IP model???

TCP/IP means transmission control protocol and internet protocol. Protocols are designed set of rules that controls each and every communication over the internet. These protocols explain the date movement between the internet and hosts computer. These have naming and addressing schemes. The TCP/IP is clearly explained in the CCNA training.

Overview of TCP/IP reference model:

Department of defense’s Project Research Agency has developed the TCP/IP under the project of interconnection.

Description of TCP/IP Layers:

Host-to-network layer:

It is the lowest layer of the all.

Protocol is used to connect the host, so that the packets can be sent through it.

It varies from network to network and host to host.

Internet Layer:

The process of selecting of packet switching network which on the basis of connectionless  internetwork layer is called the internet layer.

It holds the whole architecture by this layer.

It allows the host to insert the packets.

It allows the packet to travel independently to the destination.

The orders in which the packets are sent and received are different from each other.

Internet protocol is used in this layer.

Transport layer:

The transmission should be parallel or single path is decided by this layer.

Multiplexing, segmenting or spitting on the data done by the layer.

This layer breaks the data into small units so that the network layer can handle it efficiently.

The transport layer functions are same as the OSI model

This layer also arrange the packets sent in sequence

Application layer:

Protocols used in this layer are high level protocols such as TELNET, FTP (file transfer protocol etc.