the mystery of networks how they work
DESCRIPTION
This presentation is a lesson about computer networks for grade level 6-8, 9-12, and basic adult education.TRANSCRIPT
Basic Computers 101Created by Beashua Spearman
Image Courtesy of Microsoft Clip Art
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
Local Area Network (LAN) Wide Area Network(WAN) Metropolitan Area Network (MAN) Workstation/Workgroups Wireless Area Network(WLAN) Wi-Fi Clusters
Clients Hosts Servers Network interface Cables 802.11 a 802.11 b 802.11 g 802.11 n
Computer Networks Part I: The Mystery of Computer Networks… How They Work!
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 lines
Source:
Image Courtesy of Microsoft Clip Art
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 library
Source:Screen shot Image
Courtesy of Microsoft Clip Art
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
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
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.
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:
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
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
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.
Computer Networks Part II: The Mystery of Computer Networks… How They Work!: A Wireless World
The Wireless Network (WLAN) is the…
Image Courtesy of Microsoft Clip Art
Wi-Fi is another name for the wireless local area network.
Image courtesy of Starbucks.com
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.
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