What is OSI model? What is TCP/IP model? Compare them.

Question

07 Mar 2024

Answer :

Word Count : 1115

## OSI Model

The OSI model, developed by the International Organization for Standardization (ISO) in the late 1970s, is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven abstraction layers. Each layer serves a specific purpose and communicates with the adjacent layers, ensuring that data is transmitted efficiently and reliably across networks. The OSI model is as follows:

1. Physical Layer: This layer deals with the physical connection between devices, including transmission media, connectors, and electrical signals. It defines characteristics such as voltage levels, data rates, and physical transmission modes.

2. Data Link Layer: The data link layer is responsible for node-to-node communication, ensuring that data is delivered error-free and in sequence. It handles tasks such as framing, error detection, and flow control.

3. Network Layer: This layer focuses on routing and forwarding data packets between different networks. It determines the optimal path for data transmission, taking into account factors such as network congestion and packet prioritization.

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