How would you explain various OSI model layers?

The OSI Model Defined In the OSI reference model, the communications between a computing system are split into seven different abstraction layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.

Which device is work on all the OSI layers?

Router. Router is the special device which comes into being during the third later of the OSI Model, the Network layer. A router is also known as a “Network Layer Device”.

In which layer is HTML in OSI Model?

presentation layer
The session layer of the OSI Model is responsible for creating and managing sessions and is the first layer that passes data. HTML is in the presentation layer.

Why is OSI Model used?

The purpose of the OSI reference model is to guide technology vendors and developers so the digital communications products and software programs they create can interoperate and to promote a clear framework that describes the functions of a networking or telecommunications system that’s in use.

Why layered approach is used for the design of computer networks?

A Layered architecture provides a clean-cut interface so that minimum information is shared among different layers. It also ensures that the implementation of one layer can be easily replaced by another implementation. A set of layers and protocols is known as network architecture.

Which devices are used in application layer?

Some of the devices used in Application layer are,

• PC’s (Personal Computer), Phones, Servers.
• Gateways and Firewalls.

How many layers are used in the OSI Model?

7
However, the OSI 7-layer model is still widely used, as it helps visualize and communicate how networks operate, and helps isolate and troubleshoot networking problems. OSI was introduced in 1983 by representatives of the major computer and telecom companies, and was adopted by ISO as an international standard in 1984.