Chapter 1. The TCP/IP and OSI Networking Models Page 1 of 22 Chapter 1. The TCP/IP and OSI Networking Models This chapter covers the following exam topics: Operation of IP Data Networks Recognize the purpose and functions of various network devices such as Routers‚ Switches‚ Bridges and Hubs. Select the components required to meet a given network specification. Describe the purpose and basic operation of the protocols in the OSI and TCP/IP models. Welcome to the first chapter in your
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OSI Reference Model 1 - OSI Reference Model Network Reference Models A computer network connects two or more devices together to share information and services. Multiple networks connected together form an internetwork. Internetworking present challenges - interoperating between products from different manufacturers requires consistent standards. Network reference models were developed to address these challenges. A network reference model serves as a blueprint‚ detailing how communication
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OSI vs. TCP/IP Model Comparison & Overview The Open Systems Interconnection (OSI) reference model created in the late seventies and used today consists of seven layers that include Application‚ Presentation‚ Session‚ Transport‚ Network‚ Data Link and Physical. The Application layer often dubbed Layer 7 is the most common layer to end users and can consist of applications such as Microsoft’s Internet Explorer or other browser software. The Presentation layer provides a translation of application
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OSI Model Kenneth Andrews IT/240 August 8th‚ 2013 David Lindsey Axia College Material Appendix C OSI Model Key Terms Table Use the table to define the key terms related to the OSI Model. Describe the functions of any hardware connectivity devices and tools listed. Term | Definition | Function (if applicable) | Physical layer | Allows hardware to interact with physical device | Communication of sending and receive data from physical hardware. | Data link layer | This layer
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Layman View of OSI Reference Model (By Diganta Deka‚ Former Student‚ Proprietor-Trainer East India Technologies‚ Guwahati.)‚ diganta.deka@hotmail.com When we talk about computer networks and how computers operate in networks‚ things do not remain as simple as it seems to be. Here numerous protocols work in tandem for the sake of data integrity during the course of data transfer. To make things worse there are a lot of vendors in the market who provide and produce great number
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Role of the Physical Layer‚ Data Link Layer and Network layer for the in Network Transmissions for DotCom The Role of the Physical Layer‚ Data Link Layer and Network layer for the in Network Transmissions for DotCom As the Network Manager of NotCom‚ my goal is to plan and implement the corporate network services strategy that is the best fit for the future needs of the organization as the growth from 20 to 150 employees is realized. To reiterate‚ all employees have PCs that are a part
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Unit 4 Assignment 1: Computer Basics Review Chapter 4 Review Activities Questions Answers 1. You have created a simple electrical circuit with a battery‚ wires‚ and a light bulb. Which of the following is true about this circuit? (Choose two answers) B. The battery’s positive lead pulls current toward that lead. C. The circuit creates a direct current 2. A PC NIC and a switch port create one electrical circuit to use when sending data. The sender creates a (maximum) 1-volt electrical signal
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Secretary Maria and the OSI Network Model Mr. Boss meets Maria on the 7th floor of the main building headquarters. He gives Maria a secret message that must get to the US Embassy across town. Maria proceeds to the 6th floor where the message is translated into an intermediary language‚ encrypted and miniaturized. Maria then takes the elevator to the 5th floor where she checks the message to be sure it is all there and puts some checkpoints in the message so her counterpart at the US Embassy
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The two‚ OSI and TCP/IP are Standardized Protocol Architectures developed specifically for: 1. Devices to communicate 2. Vendors to have more marketable products 3. Customers to insist on standards based equipment The OSI is a reference model whilst TCP/IP is the suite which is the most widely used. Description of Open Systems Interconnection (OSI Model) Developed by the International Organization for Standardization (ISO) It is made up of seven layers and each layer: 1. performs a subset of
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1. Physical Layer. Is the physical connection between the sender and the receiver. It includes all the hardware devices (computers‚ modems‚ and hubs) and physical media (cables and satellites). This layer specifies the type of connection and the electrical signals‚ radio waves‚ or light pulses that pass through it. 2. Data Link Layer. Is responsible for moving a message from one computer to the next computer in the network path from the sender to the receiver. This layer has 3 functions: a
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