Google IT: Week 1. The Bits and Bytes of Computer Networking Introduction to Computer Networking- Exam

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The physical layer (Layer 1) - ANSWER The first layer is the Physical layer. It represents the physical devices that interconnect computers. The data link layer (Layer 2) - ANSWER The second layer ... in our model. responsible for defining a common way of interpreting these signals, so network devices can communicate. Ethernet - ANSWER The most common data link layer protocol for wired connections The network layer (Layer 3) - ANSWER The third layer, Sometimes called the Internet layer. It's this layer that allows dierent networks to communicate with each other through devices known as routers. Internet - ANSWER . A collection of networks connected together through routers is an internetwork. IP or Internet Protocol - ANSWER The most common protocol used at this layer. The transport layer (layer 4) - ANSWER The fourth layer. Sorts out which client and server programs are supposed to get that data Client - ANSWER Something that requests data from a server. Protocols - ANSWER A defined set of standards that computers must follow in order to communicate properly TCP - ANSWER Transmission Control Protocol. MAC or media access control address - ANSWER a globally unique identifier attached to an individual network interface. Full Duplex communication - ANSWER When data can flow across a cable in both directions. hexadecimal - ANSWER The number system that has 16 numerals broadcast - ANSWER The transmission method that sends data to every device on a LAN. CSMA/CD - ANSWER The technique that allows you to have multiple logical LANs operating on the same physical equipment. Switch - ANSWER A device that connects lots of devices and remembers which ones are connected to each interface Crosstalk - ANSWER When an electrical pulse on one wire is accidentally detected on another nearby wire preamble - ANSWER The first part of an Ethernet frame IP or Internet protocol - ANSWER Server - ANSWER Something that provides data to something requesting that data. The 5-layers of the TCP/IP model? - ANSWER Physical Layer, The data link Layer, The Networking Layer, The transport Layer and the application Layer LAN - ANSWER Local Area Network Hub - ANSWER A physical layer device that allows [Show More]

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