Reference Models Assignment Help
In computer network, reference model is divided in two Layers OSI Layer and TCP/IP Layer.
- Seven Layer which is also called OSI model, in present maintain by International organization of standards.
- TCP/IP layer which have four layers.
OSI Layer
- Physical layer: In which physical parameters like electrical and mechanical parameters of transmission data will be in controlled state.
- Data Link Layer: Which is just immediate above layer of physical layer, which helps in transmission of data frame and give them address, error correcting capacity.
- Network Layer: Which is present after data link layer and helps in showing path for data between computers, switches and routers. And shows how to data transfer to the individuals.
- Transport Layer: Present after network layer and helps in data transfer and maintain control..
- Session Layer: Work on the creating and maintain session during one application run time request access to other application access request.
- Presentation Layer: work on syntactic representation of data such as codes like Unicode etc.
- Application Layer: Give interface or application and presentation layer. Read in details about application layer
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TCP/IP layer
- Network Access
- Internet
- Transport
- Application
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Advantage of Reference model:
- It divides the network communication process into smaller and simpler components, thus aiding component development, design and truobleshooting.
- It allows multiple 'vendor development through staandardrization of network components.
- It encourages industry standarization by defining what functions occur at each layer of the model.
- It allows various types of network hardware and software to communicate.
- It prevents changes from one layer affecting other layer.
