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Introduction to the osi 7 layer model
- 1. Chapter 1
- 2. Objective Brief History of the OSI The OSI 7 Layers
- 3. Brief History Of OSI The OSI Model (Open System Interconnection) Created by the International Standard Organization (ISO)
- 4. OSI 7 Layer 1. Physical 2. Data Link 3. Networking 4. Transport 5. Session 6. Presentation 7. Application
- 5. Summary The Brief History of the OSI 7 Layer it was developed by the International Standard Organization in 1984. OSI (Open System Interconnection) The 7 Layer are: 1. Physical- for media and hardware 2. Data Link- MAC, LLC, and Networking Interface card 3. Networking- IP Addressing the Routers
- 6. Summary Concludes 4. Transport-TCP/IP, Error correction and Detection 5. Session- end to end communications 6. Presentation-Encryption and decryption and data compression 7. Application- the end user interaction.
Notas del editor
- Slide 1-This is an introduction to the OSI 7 layer model. Chapter one’s information can be found in your data communications textbook. Next Slide
- Slide 2- The objectives of this lesson is to provide a brief history of the OSI model. It will also serve as a time to present the 7 layers of the OSI model. Next Slide
- Slide 3- In looking at a brief history of the OSI model. Let’s first begin by defining OSI. OSI stands for Open System Interconnection. It was developed and created by the International Standard Organization in 1984. The OSI model provides an understanding of how data moves from one computer system to another. It is governed by a host of protocols. Protocols are simply rules and standards that help provide a method for communication. This understanding of the OSI, enables developers to design systems that can properly communicate with one another as it relates to the transferred data.Next Slide
- Slide 4-The OSI model consist of 7 layers.Layer 1 is the Physical layer. The Physical layer is concerned about hardware, cabling, and any device that does not require a MAC address or IP address.Layer 2 is the Data Link layer. The Data Link layer is concerned about the use of the Media Access Control address and the Logical Link Control. The devices that you find at this layer include switches, bridges, and the Network Interface Cards. Layer 3 is the Networking layer. The Networking layer is concerned about IP addressing which is a logical address. The major component of this layer is the router, which does path determination for data packets. Layer 4 is the Transport layer. The Transport layer is concerned about error correction and detection. This layer is concerned about two major protocols, Transmission Control Protocol and User Datagram Protocol. Layer 5 is the Session layer. The Session layer is concerned about the end to end connection between systems. Layer 6 is the Presentation layer. The Presentation layer is concerned about data translation between different protocols, data compression, encryption and decryption. Layer 7 is the Application layer. The Application layer is closest to the end user. Next Slide
- Slide 5-The following is a summary of this presentation, which covered a brief history of the OSI model. The OSI was developed by the International Standards Organization in 1984. OSI stands for Open System Interconnection. It consists of 7 layers: Layer 1 Physical layer is related to media and hardware. Layer 2 Data Link layer is concerned about the Media Access Control address, the Logical Link Control and the Network Interface Card. Layer 3 is the Networking layer where IP addressing and routing takes place. Next Slide
- Slide 6- Layer 4 is the Transport Layer it is concerned about TCP and UDP, error correction and detection. Layer 5 the Session layer deals with the end-to-end communications between networks. Layer 6 is the Presentation layer which is concerned about encryption and decryption, and data compression. Layer 7 is the Application layer is concerned about the end user interaction. This concludes this presentation.