What is application layer.physical layer?

Question: What is application layer!.physical layer!?
Best Answer - Chosen by Asker:

physical and application layers are two layers in OSI model!.!.OSI model is the set of protocols and it determines how message can be transferred from one device in another without changing the underlying software and hardware of the two devices!.!.OSI model has seven layers
7!.application layer
6!.presentation
5!.session
4!.transport
3!.network
2!.data link
1!.physical layer

physical layer is the first layer in both OSI (open system interconnetion)!.!.physical layer converts the total encapsulated message into bits and transforms the bits into electromagnetic signal and this signal is transmitted to the physical layer of the receiving device!.!.after reaching the physical layer of the receiving device the signal again is transformed into bits and backup through the layers of OSI model!.!.

application layer is the last layer of OSI model and is mostly consists of softwares!.!.when a device wants to send a message to another device the message first comes into application layer and goes down to physical layer where it is transformed into bits!.!.then this bits get transformed into electromagnetic signals and is transformed to the physical layer of receiving device and back up through the layer of receiving device and reaches application layer and thus the receiver receives the message!!Www@QuestionHome@Com

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