Introducing
Your new presentation assistant.
Refine, enhance, and tailor your content, source relevant images, and edit visuals quicker than ever before.
Trending searches
18
OSI Models
OSI Model :
Is a system used to describe the functions of a networking system.
Each layer of the OSI Model makes use of functions provided by the layers below it and provides functions that are used by the layers above it.
Definition
It is used for :
1. Describing the functions of a networking system.
2. Communicating from to different systems.
Why it is used ?
Layers
The layers of the OSI model
Physical Layer :
1. Lowest layer of the OSI reference model.
2. Responsible for sending bits from one computer to another.
Physical
Data Link Layer :
Data Link
1. It comes from the Physical layer
2. It is responsible to check if there’s any physical transmission errors
3. The data is broken to small parts and are called frames.
Network Layer :
Network
1. Focus on data transmission from host to destination in two different networks.
2. The data is called Packets
3. Packets are resembled on the receiving device.
Transport Layer :
Transport
1. The main function is to ensure that each message should reach its destination completely assembled.
2. Flow control : it is used to prevent the sender from overcoming the receiver. (Faucet)
3. Error Control : is the process of detecting and correcting data frames that have been lost during transmission
Session Layer :
Session
1. Manages the sequence and flow of events that initiate and tear down network connections.
2. It is built to support multiple types of connections that can be created dynamically and run over individual networks.
Presentation Layer :
1. Prepares data for the application layer. It defines how two devices should change the data so it is received correctly on the other end.
Presentation
Application Layer :
Application
1. This layer is what the user sees, in terms of loading an application (such as Web browser or e-mail), this application layer is the data the user views while using these applications.
Done by :
Done by :
Abdulla Salem Alshamsi
Rashed Saif Alshamsi
11B1