TOP FOUR LAYERS OF OSI MODEL

Top Four Layers of OSI Model

Top Four Layers of OSI Model

Introduction

The Open Systems Interconnection model is an indication instrument for empathizing data communications among any two systems connected in a network. The OSI model fractions the procedures of communication into seven different layers. All seven layers execute particular functions that assist the layers on top of it and render services to the layers below it. Out of the seven layers, the three layers at the bottom of the OSI model revolve around communicating traffic through the network to an end system, whereas the four layers at the top become effective in the end system to complete the process (Simonea P, 2006).

This research paper will cater your knowledge base by providing comprehensive information of top four layers. This information will comprise on the functions of the top four layers and their affiliation with one another. The understanding of OSI model and layers of OSI model will help in understanding the network process and details of computer networking.

Discussion

An Overview of the Open Systems Interconnection Model

A model of computer networking provides a standard ways to apart functions of computer networking into various layers. Every layer of OSI model banks on the layers beneath it to offer to endure functions and assists support to the layers on top of it. This type of pattern that offered functionality in the form of layers is known as "stack of protocols” or “suit of protocols”. (Simonea P, 2006)

Communications protocols, also referred as rules, can execute their function in either computer hardware or software application or, as with most communications protocol batches, in a grouping of the two. The type of these protocol batches is that the bottom layers execute their function in computer hardware or microcode (software system that executes on a particular computer hardware bits) while the top layers function entirely in software (Simonea P, 2006).

The OSI model is a seven-layer construct that defines the essentials for communications among two information processing systems. The "7498-1" standard of International Organization for Standardization also outlined this model. This model permits all network components to function collectively, regardless who made the communications protocols and what system supplier affirms them (Simonea P, 2006).

Although the open systems interconnection model is conceptual and entirely insubstantial, it has been stated graphically since its foundation. Figures that would be familiar to any network engineer nowadays were hand-drawn in the really 1st meeting of the group that produced the model (McKenzie 1978).

Though the open systems interconnection model was earlier destined to be employed as a helping model for the formation of communications principles, but for the most part, it unable in that respects (Zimmerman H, 1980). The open systems interconnection model persists, nevertheless, the model of alternative for instructing, empathizing, and communicating networking constructs (Testerman, 1999).

Applications of Open Systems Interconnection Model

The primary advantages and application of open systems interconnection model are listed below:

It assists users empathize the broader image of computer networking

It assists users empathize how computer hardware and application components work in collaboration

It provides functions for easier system troubleshooting ...