We explain what is the OSI Model used in computer networks, and how it works. Also, what is it for and what are its layers.
The OSI Model ( Open Systems Interconnection , that is, “Open Systems Interconnection”), is a reference model for the communication protocols of computer networks or computer networks . It was created in the 1980s by the International Organization for Standardization (ISO).
The OSI Model was initially published by the International Telecommunications Union (ITU) until 1983, and since 1984 it is also offered by the ISO itself, with standard. Its function was to standardize or serialize communications on the Internet , since at the beginning it was extremely chaotic.
Being a normative model, the OSI Model is really a theoretical construct , with no direct correlation in the world of the tangible. It is only an attempt to regulate the diverse and varied technological voices of the world, given that there are numerous manufacturers, companies and technologies in the world of telecommunications.
This model has been refined over time and today offers seven different layers with which to define the different phases that the information goes through in its journey from one electronic device to another connected in the network. No matter the geographical location of the user or the type of technology used, all means of global interconnection, such as the Internet , use this type of unified protocols.
The development of computer networks and their expansion in the early 1980s showed the need to interconnect systems from different sources , or the networks that they formed and maintained. As with people who speak different languages, telecommunications were unable to continue their expansive route.
Even the programs designed for interconnection had problems with each other , since copyright rules on computerized design were an additional barrier.
The idea of creating the OSI Model as a solution to this problem arose after the ISO carried out an investigation in the matter. Thus, ISO set out to determine the general set of rules applicable to all networks .
The operation of the OSI Model depends directly on its seven layers, in which it decomposes the complicated process of digital communication . By compartmentalizing it, it assigns to each layer very specific functions, within a fixed hierarchical structure.
Thus, each communication protocol uses these layers in their entirety or only some of them, but by obeying this set of rules, it ensures that communication between networks is effective and, above all, in the same terms.
The OSI Model is fundamentally a conceptual tool for organizing telecommunications. It universalizes the way in which information is shared between computer networks or computerized systems, regardless of their geographical, business or other conditions that could make data communication difficult.
The OSI Model is not a network topology, nor a network model in itself, nor a protocol specification; It is simply a tool that defines the functionality of the protocols , to achieve a communication standard, that is, to ensure that all systems speak the same language. Without it, a network as vast and diverse as the Internet would be practically impossible.
The seven layers or levels of the OSI model are as follows:
The OSI Model layers can be remembered through the FERTSPA mnemonic rule : Physics, Data Link, Network, Transport, Session, Presentation and Application.
Cryptocurrency has captivated the world since Bitcoin's mysterious arrival in 2009. It began as a…
Hello, Guys Welcome to our Website. Today we will give you information about a Famous…
Alkenes are chemical elements with double bonds or carbon double bonds. Its general formula is…
Logical semantics is a branch of logic that focuses on studying the meaning of statements…
The Game Boy Advance (GBA) was a popular handheld gaming system developed using the Game…
Soft Puzzle - Drop The Slime APK - Simple and Easy! But that's why this…