The Physical layer of the OSI model is responsible for the transfer of bits - the 1’s and 0’s which make up all computer code. In the rest of this article, we will look at each of the individual layers of the OSI model and their individual responsibility. When combined together, each function contributes to enables full computer to computer data communication. The OSI model is divided into seven different layers, each of which fulfills a very specific function. Much like a car is composed of independent functions which combine to accomplish the end-goal of moving the car forward: A battery powers the electronics, an alternator recharges the battery, an engine rotates a driveshaft, an axle transfers the driveshaft’s rotation to the wheels, and so on and so forth.Įach individual part can be independently replaced or worked on, and as long as each individual part is functioning properly, the car moves forward.

It is a set of seven independent functions which combine to accomplish the end-goal of Computer to Computer communication. The Open Systems Interconnect model (OSI Model) explains all the individual functions that are necessary for the Internet to work. Use the navigation boxes to view the rest of the articles. This article is a part of a series on Packet Traveling - everything that happens in order to get a packet from here to there.

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