Assingment 3-cse-313
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The document discusses the OSI and TCP/IP models for networking. It describes the seven layers of the OSI model and the functions of each layer, with a focus on the physical and data link layers. The physical layer is responsible for the actual connection and transmission of bits between devices, while the data link layer forms frames from packets and handles error control and synchronization of data being transmitted. The overall purpose is to break down the communication process into layers to reduce complexity and allow different systems to communicate.
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OSI Reference Model
This document presents an academic description of the OSI reference model. It was created by a group of 5 students for their Data Communication course taught by Ms. Itisha Nowrin. The presentation will cover the 7 layers of the OSI model, including the physical, data link, network, transport, session, presentation, and application layers. It will also discuss what the OSI model is, how data flows through the layers, and provide a summary of the functions of each layer.
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OSI (Open Systems Interconnection) is defined as reference model that is used for how applications can impart over the network. It is the conceptual model that is used for comprehension relationships. Copy the link given below and paste it in new browser window to get more information on OSI Model:- www.transtutors.com/homework-help/computer-science/osi-model.aspx
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This document discusses the OSI model and its 7 layers. It describes the layered architecture approach of breaking communication tasks into simpler sub-tasks handled by individual layers. Each layer provides services to the layer above and relies on the layer below. The layers are the physical, data link, network, transport, session, presentation, and application layers. Each layer has specific responsibilities for handling data transmission and communication functions.
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The OSI 7 layer model is a conceptual framework developed by ISO in 1984 to standardize network communication. It divides communication tasks into 7 layers, with layers 7-4 dealing with end-to-end communication and layers 3-1 dealing with network device communication. The 7 layers can also be divided into upper layers (7-5) which deal with application issues in software, and lower layers (4-1) which deal with data transport and are implemented with both hardware and software.
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The document discusses the OSI 7-layer model created by the International Organization for Standardization in 1984. It describes the 7 layers of the OSI model: physical, data link, network, transport, session, presentation, and application. The physical layer deals with media and hardware, the data link layer handles MAC addressing and LLC, the network layer deals with IP addressing and routing, and the higher layers deal with transport, session communication, encryption/compression, and end-user applications.
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The document discusses the OSI model, which is a standard networking framework that defines 7 layers of communication. It was developed by ISO in 1984 to establish a common way for diverse communication systems to interconnect. Each layer performs a specific task, passing data to the next layer. Data moves down the layers at the source and up at the destination, with each layer adding header information. This layered approach separates functions and makes the network easier to manage and troubleshoot. The TCP/IP model is also discussed as an alternative networking framework.
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OSI Reference Model
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The document discusses the OSI model, which is a standard networking framework that defines 7 layers of communication. It was developed by ISO in 1984 to establish a common way for diverse communication systems to interconnect. Each layer performs a specific task, passing data to the next layer. Data moves down the layers at the source and up at the destination, with each layer adding header information. This layered approach separates functions and makes the network easier to manage and troubleshoot. The TCP/IP model is also discussed as an alternative networking framework.
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OSI MODEL
1. The OSI model is a standard reference model that defines the functions of a networking system by separating it into 7 layers.
2. Each layer has a specific role and provides services to the layer above it. Data moves down the layers at the sending device and up at the receiving device.
3. The model was developed in 1984 by ISO to provide a common way of designing and implementing communication between any two systems using a network. It aims to make networks more flexible, efficient and easy to maintain.
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The document describes the OSI model, which is a standard networking framework that defines 7 layers of communication. The physical layer deals with physical communication and data transmission over a medium. The data link layer handles frame creation and error checking. The network layer implements routing and logical addressing. The transport layer provides reliable data delivery and flow control between applications. The session layer manages dialogues and connections between devices. The presentation layer defines data formats. The application layer supports application software and programs. Overall, the OSI model provides a layered approach to network communication and data transfer.
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The Open Systems Interconnection Basic Reference Model [OSI] is an abstract description for network protocol design, developer as an effort to standardize networking.
Osi model
The document discusses network models including the OSI model and TCP/IP model. It describes the seven layers of the OSI model and the functions of each layer. It also discusses the four layers of the TCP/IP model and compares the two models, noting they are similar in concept but differ in number of layers and how protocols fit within each model.
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Assingment 3-cse-313
- 1. OSI & TCP Model Submitted By: Md. Sohanur Rahman ID: 1834902135 Batch: 49 (B) Program: CSE(Day)
- 2. OBJECTIVES To discuss the OSI model and it’s layer architecture and to show the interface between the layers To briefly discuss the function of each layers in the OSI model To introduce the TCP/IP protocol To show the functionality of each layer in the TCP/IP Model
- 3. Network Model A method of describing and analyzing data communication networks by breaking the entire set of communication process into a number of layers Each layer has a specific function
- 4. The OSI Model International standard organization (OSI) established a committee in 1977 to devolop an architecture for systems communication Open System Interconnection (OSI) reference model is the result of this effort This model allows any two different systems to communicate regardless of their underlying architecture
- 5. Contradiction The OSI model describes how data flows one computer, through a network to another computer The OSI model is not a protocol it’s a model for understanding and designing a network architecture. The OSI model consists of seven separate but related layers, each of which defins a part of the process of moving information across a network.
- 6. Seven Layers of the OSI model
- 7. Why so many layers? To reduce the complexity, network are organized as a stack of layers, one below the other Each layer perform a specific task, It provides services to an adjacent layer
- 8. OSI Layer
- 9. Physical Layer Physical layer is the bottom(layer 1) of OSI model It is responsible for the actual physical connection between the devices The physical layer is responsible for movments of individual bits from one node to next
- 10. Functions of physical layer Convert bits to signal Bit synchronization Manage physical connection Bit rate control Line configuration Physical topology Transmission mode Switching
- 11. Data Link Layer The data link layer is responsible for moving frames from one node to the next. It forms frames from the packets that are recived from network layer and gives it to physical layer It also synchronizes the information which is to be transmitted over the data. Error controlling is easily done.