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Questions and Answers
What is the purpose of the OSI model?
The purpose of the OSI model is to provide a framework for standardization in computer communication.
How many layers are there in the OSI model?
There are 7 layers in the OSI model.
What does each layer in the OSI model do?
Each layer performs a subset of the required communication functions.
What does one layer relying on the next lower layer mean in the OSI model?
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Why is TCP/IP now considered the default standard over the OSI model?
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What is the main advantage of an open system model like OSI?
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What is the OSI model?
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Why did the OSI model lose popularity in the 90's?
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What is the role of each layer in the OSI model?
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How is the OSI model used as a framework for standardization?
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Study Notes
OSI Model Overview
- The OSI (Open Systems Interconnection) model is a conceptual framework for understanding how data is transmitted over a network.
Purpose and Layers
- The primary purpose of the OSI model is to enable devices from different manufacturers to communicate with each other.
- There are 7 layers in the OSI model: Physical, Data Link, Network, Transport, Session, Presentation, and Application.
Function of Each Layer
- Physical Layer: defines physical means of data transmission
- Data Link Layer: provides error-free transfer of data frames
- Network Layer: routes data between nodes on different networks
- Transport Layer: provides reliable data transfer between devices
- Session Layer: establishes, manages, and terminates connections
- Presentation Layer: converts data into a format that can be understood by the receiving device
- Application Layer: provides services to end-user applications
Layer Interaction
- Each layer relies on the services of the layer below it, with the lowest layer being the Physical Layer.
OSI vs TCP/IP
- TCP/IP is now considered the default standard over the OSI model due to its simplicity and widespread adoption.
Advantages
- The main advantage of an open system model like OSI is that it allows devices from different manufacturers to communicate with each other.
History
- The OSI model lost popularity in the 90's due to its complexity and the increasing adoption of TCP/IP.
Standardization
- The OSI model is used as a framework for standardization, enabling devices from different manufacturers to communicate with each other.
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Description
Test your knowledge of the OSI and TCP/IP models for computer communication with this quiz from Maharashtra Institute of Technology, Pune. Learn about the ISO's role in standardization and the open system model's ability to facilitate communication between different architectures.
