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    OSI Model (Open Standards Interconnection Model) was created by the International Organization for Standardization (ISO). With the technology boom came the rise of several giants in the fields of networking devices and software, including Huawei, Nokia, Cisco, Microsoft, IBM, HP, Apple, and others, each vendor had their own standards, communication protocols, cable types and ports. This caused major problems if clients wanted to buy Network Switches from one company, Servers from another, and Routers from yet another. Although, there were many workarounds for these problems, such as deploying gateways on the network that could translate between protocols, but such solutions created capacity & performance bottlenecks such as slow portions of the network & complex troubleshooting. Eventually, vendors had to agree on a common standard which worked for everyone & it resulted in OSI Model which we use today. The OSI model divides all network functions into seven distinct layers as in below:     The more complex functions, which are closer to the user, are at the top, moving down to network cable specifications at the bottom layer. The ISO created the OSI model to help vendors agree on a set of common standards with which they could Read More …