What layer of OSI model is communication?

Physical. The lowest layer of the OSI model is concerned with data communication in the form of electrical, optic, or electromagnetic signals physically transmitting information between networking devices and infrastructure.

Can the OSI model work with missing layers?

Remember that you can’t skip any layers in the OSI-model, it’s impossible to jump from the Application layer directly to the Network layer. You always need to go through all the layers to send data over the network.

In which layer wireless communication is possible?

The thermosphere layer of the atmosphere makes the radio communication possible on Earth. This layer is composed of several ions that reflect the radio waves back to Earth, making it possible to have wireless communication.

Are there any alternative models to the OSI model if yes define it?

Are there any alternative models to the OSI model? If yes, define it. Ans: TCP/IP is the alternate model that also explains the information flow in the network. It is a simpler representation compared to the OSI model but contains fewer details of protocols than the OSI model.

Which layer of the OSI model is concerned with end to end communication over the network?

Transport (Layer 4) OSI Model, Layer 4, provides transparent transfer of data between end systems, or hosts, and is responsible for end-to-end error recovery and flow control. It ensures complete data transfer. Layer 4 Transport examples include SPX, TCP, UDP.

What is the purpose of the last three layers in OSI model?

Layer 3 of the OSI Model: Network Layer provides the functional and procedural means of transferring variable length data sequences from a source host on one network to a destination host on a different network, while maintaining the quality of service requested by the transport layer (in contrast to the data link …

Which layer is missing in the OSI model?

Explanation: In OSI reference model, there are two layers which are not present in TCP/IP model. They are Presentation and Session layer.

Which layers in the ISO OSI model can provide error detection and correction?

Layer 2 of The OSI Model: Data Link Layer provides the functional and procedural means to transfer data between network entities and to detect and possibly correct errors that may occur in the physical layer.

What makes the wireless communication possible in the ionosphere *?

Explanation: ionosphere helps in wireless communication because it has ions present in it.

Which is the most important layer of the atmosphere?

Troposphere
Option a: Troposphere is regarded as the most important layer of atmosphere. It is the lowermost layer of the atmosphere and contains 75\% of all air in the atmosphere. Most clouds occur in this layer because 99\% of the water vapour in the atmosphere is found here.

How does the application layer differ between the OSI and TCP models?

OSI refers to Open Systems Interconnection whereas TCP/IP refers to Transmission Control Protocol. OSI follows a vertical approach whereas TCP/IP follows a horizontal approach. OSI model, the transport layer, is only connection-oriented whereas the TCP/IP model is both connection-oriented and connectionless.

What is the importance of the physical layer in the OSI model?

Physical Layer maintains the data rate (how many bits a sender can send per second). It performs Synchronization of bits. It helps in Transmission Medium decision (direction of data transfer).