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Ip Networking Assignment 1.1

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IP Networking Assignment 1.1
Chapter 1 1. The TCP/IP networking model is a model of networking functions that are separated into different layers. Each layer performs a specific function that effects the layer above and below it. We use the TCP/IP model to troubleshoot a computer that is experiencing network issues. 2. There are seven different layers in an OSI model. Layer 1 (Physical layer): the physical characteristics of a computer such as connectors and pins. Layer 2 (Data Link): defines the internet protocols and the format of a header and trailer that allows devices to send and receive data successfully. Layer 3 (Network): routing IP packets and IP addressing. Layer 4 (Transport): data delivery from one computer to another. Layer 5 (Session): User communicating with the computer. Layer 6 (Presentation): defining data formats such as text files (.txt) and picture files (JPEG). Layer 7 (Application): support for applications such email and internet explorer.
3. The difference between same layer and adjacent layer interactions is that same layer deals with two computers, while adjacent with just one computer.
4. Encapsulation is the process of placing data into a header and footer. Decapsulation is the process of removing data from a header and footer. Chapter 2 1. There are five different types of Ethernet which are 10Base2, 10Base5, 10Base-T, 100Base-TX, and 1000Base-T. Also there are many different types of topologies such as bus, star, mesh, extended star, and token ring.
2. The common types of Ethernet cables are straight through and crossover cables. The most common pinouts are pin 1 to pin 1, pin 2 to pin 2 (straight through) and pins 1,2 to 3,6 (crossover).
3. CSMA/CD is a step by step process on what to do when a collision occurs. For example, PC 1 with a frame to send listens until Ethernet is not busy. When Ethernet is not busy, the

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