Why does TCP IP model has fewer layers than the OSI model?

OSI model gives guidelines on how communication needs to be done, while TCP/IP protocols layout standards on which the Internet was developed. So, TCP/IP is a more practical model. In OSI, the model was developed first and then the protocols in each layer were developed.

Why does OSI have so many layers?

OSI is a generic, protocol-independent model intended to describe all forms of network communication. In TCP/IP, most applications use all the layers, while in OSI simple applications do not use all seven layers. Only layers 1, 2 and 3 are mandatory to enable any data communication.

Why TCP IP model is more popular than OSI model?

Reliable and Secure Connection: The OSI model does not have any special mechanism for providing a reliable and secure connection for data transmission. On the other hand, the TCP/IP model has a 3-way handshake mechanism for providing a reliable and secure connection link oner the network.

Why layers are merged in TCP IP?

The Application, Presentation, and Session layers of the OSI model are merged into a single layer in the TCP/IP model. Also, Physical and Data Link layers are called Network Access layer in the TCP/IP model. This layer is responsible for reliable transmission of data and the the error-free delivery of packets.

How many layers are in TCP IP model?

four layers
The four layers of original TCP/IP model are Application Layer, Transport Layer, Internet Layer and Network Access Layer.

What is TCP IP model and its layers?

The TCP/IP model consists of five layers: the application layer, transport layer, network layer, data link layer and physical layer. TCP/IP is a hierarchical protocol made up of interactive modules, and each of them provides specific functionality.

Why is layered architecture preferred in communication?

The main aim of the layered architecture is to divide the design into small pieces. Each lower layer adds its services to the higher layer to provide a full set of services to manage communications and run the applications. It provides modularity and clear interfaces, i.e., provides interaction between subsystems.

Which two layers of the OSI model are not present in the TCP IP model?

Explanation: In OSI reference model, there are two layers which are not present in TCP/IP model. They are Presentation and Session layer. The functions of Presentation and Session layer in the OSI model are handled by the transport layer itself in TCP/IP.