Many Networking Software are structured into layers in the same way, TCP/IP is modelled in layers. This layered representation represents the term protocol stack, which refers to the stacked set of rules in the protocol suite. Copy the link given below and paste it in new browser window to get more information on TCP IP Model:- www.transtutors.com/homework-help/computer-science/tcp-ip-model.aspx

2.  The TCP/IP Model is the set of communications protocols used
for the internet and other similar networks
 It is named from two of the most important protocols in it:
 The Transmission Control Protocol (TCP) and
 The Internet Protocol (IP), which were the first two networking
protocols defined in this standard
 The most well known network that adopted TCP/IP is The
Internet- the biggest WAN in the world

4. Application Layer
This is the topmost layer of the TCP/IP suite. This is responsible for
coding of the packet data
Transport Layer
This layer monitors end to end path selections of the packets. It also
provides service to the application layer
Internet Layer
This layer is responsible for sending packets through different
networks
Network Layer
It is the closest layer to the network hardware. It provides service to
Internet Layer

5. Fig2: detailed architecture of TCP/IP Model

6.  Connections are established using a three- way handshake
 Data is divided into packets by the operating system
 Packets are numbered, and received packets are acknowledged
 Connection are explicitly closed or may abnormally terminate

7. Fig3: 3-way handshake Fig4: acknowledgement

9.  The OSI model has 7 layers while the TCP/IP model has 5 layers
 Both have network, transport, and application layers, but the
other layers are different
 OSI model supports both connectionless and connection-
oriented communication
 TCP/IP supports only connectionless communication

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