Network Basics | What is OSI Reference Model? | Layers of OSI Model
"What is OSI Reference Model? and Layers of OSI Model" is an informative video explaining the basics of the Open Systems Interconnection (OSI) Reference Model, a conceptual framework used in computer networking to standardize communication between different systems.
The video begins by introducing the OSI Reference Model and its purpose, which is to facilitate communication between different network devices by dividing the communication process into seven layers.
The video then describes each layer of the OSI Model, starting with the physical layer, which is responsible for transmitting data over physical media. Next, the data link layer is discussed, responsible for the error-free transmission of data frames between two devices.
The third layer, the network layer, is responsible for routing data packets through a network, while the fourth layer, the transport layer, is responsible for ensuring the reliable delivery of data between end systems.
The fifth layer, the session layer, is responsible for establishing, maintaining, and terminating communication sessions between two devices, while the sixth layer, the presentation layer, is responsible for ensuring the compatibility of data between different systems.
Finally, the seventh layer, the application layer, is discussed, which is responsible for providing network services to user applications.
The video also explains the functions of each layer in more detail, including the protocols used and the data units that are transmitted between layers.
Overall, "Understanding OSI Reference Model: Layers and Functions" is an excellent resource for anyone who wants to learn about the OSI Reference Model and the role of each layer in the communication process. The video is easy to understand, with clear explanations and helpful diagrams to illustrate each layer's functions and interactions with other layers in the model.
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