Question

The OSI layers can be divided between those that serve the network and those that serve the computer. Identify the layers concerned strictly with the network and the ones that serve the local computer.The OSI layers can be divided between those that serve the network and those that serve the computer. Identify the layers concerned strictly with the network and the ones that serve the local computer.

Answer 1

There are seven layers in the OSI Model.

From bottom to top

(1) Physical Layer ->Provides physical infrastructure to be able to transfer bits

(2) Data Link Layer -> Transfer of dataFrames to network layers

(3) Network Layer -> The frames received from Data Link Layer is divided into small packets to transfer them from source to destination.

(4) Transport Layer -> Responsible for transferring data packets in a reliable way over the network.

(5) Session Layer -> Responsible for manage connection to source to destination until the data transfer is being done after it terminates the session.

(6) Presentation Layer -> Provides the difference encryption methods and translations utilities to secure your data.

(7) Application Layer -> This is the last layer of the OSI model and visible to host. User interact with this layer.

The first three layers (Physical, DataLink Layer, Network Layer) Serve for Network

The Remaining four layers (Transport Layer, Session Layer, Presentation Layer, and Application Layer) serve for local machine or host computer.