The mystery of networks how they work
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The mystery of networks how they work

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This presentation is a lesson about computer networks for grade level 6-8, 9-12, and basic adult education.

This presentation is a lesson about computer networks for grade level 6-8, 9-12, and basic adult education.

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The mystery of networks how they work Presentation Transcript

  • 1. Image Courtesy of Microsoft Clip Art Basic Computers 101Created by Beashua Spearman
  • 2.  After completing this lesson, students will be able to… Explain what a computer network is Identify the key terms related to computer networking. Understand the terminology associated with computer networking
  • 3.  Local Area Network (LAN) Wide Area Network(WAN) Metropolitan Area Network (MAN) Workstation/Workgroups Wireless Area Network(WLAN) Wi-Fi Clusters
  • 4.  Clients Hosts Servers Network interface Cables 802.11 a 802.11 b 802.11 g 802.11 n
  • 5. Computer Networks Part I: TheMystery of Computer Networks…How They Work!
  • 6.  A Network is a system of two or more computers that are connected through a series of cables Examples: Infrared light beams, satellite connections, wireless towers, or telephone linesSource: Image Courtesy of Microsoft Clip Art
  • 7. The Local Area Network (a.k.a) LAN is a… Smaller network limited to a geographic setting. The computers are connected through cables. Examples: 1 Home or 1 School computer lab or librarySource: Screen shot Image Courtesy of Microsoft Clip Art
  • 8. The Wide Area Network(WAN) is… Any area over 30 miles It connects a larger geographic area Examples: Arkansas, the United States, and the Global World Includes global networks(e.g. The Internet)Source: Image Courtesy of Microsoft Clip Art
  • 9.  The MAN network is the Metropolitan Area Network. It has a span of 30 miles Its reach is about 2 buildingsSource: Screenshot Courtesy of: Learn-networking.com
  • 10.  A Workstation is a personal home computer It can be a desktop computer used in a business. It connects human beings together through the use of the desktop computer. E.g. A Tokyo stockbroker communicates with a Wall Street stockbroker through email communication.
  • 11.  A Node is a device that is connected to a computer Example: Printer, Scanner, Server, Laptop The Internet is not required within a network Most Common Node: Desktop Style computer(Workstation)Source:
  • 12.  A Cluster is a group of server operating systems. Computers connected to be viewed as a “Single System” Within a Local Area Network (LAN) Runs on its own operating system Screenshot Courtesy of Cluster Computing
  • 13.  Client: A Part of the network that receives the data. Host: A part of the network that gives the data. The data is accessed from the Host
  • 14.  Server: The same data or information different users receive. E.g. Five different people in various countries search for the word Red Rose in the Google Search Engine and they all receive the same results. Network Interface Cables (NIC): A card that is installed in a computer that allows wireless or Ethernet cable usage to access the internet.
  • 15.  Computer Networks Part II: The Mystery of Computer Networks… How They Work!: A Wireless World
  • 16.  The Wireless Network (WLAN) is the… Image Courtesy of Microsoft Clip Art
  • 17.  Wi-Fi is another name for the wireless local area network. Image courtesy of Starbucks.com
  • 18.  802.11 a, 802.11b are the first regulations within the wireless networking standards. 802.11g, 802.11n are the recent Wi-Fi regulations within the original Wi-Fi 802.11b The 11 represents the speed of the network connection.Source: