Presentation on theme: "Unit 5 Terminology Study Assignment Review Computer Technology"— Presentation transcript:
1 Unit 5 Terminology Study Assignment Review Computer Technology NetworksUnit 5 Terminology StudyAssignment ReviewComputer Technology
2 NetworkA computer network, or simply a network, is a collection of computers and other hardware components interconnected by communication channels that allow sharing of resources and information.
3 Network BeginningsThe Defense Advanced Research Projects Agency (DARPA) funded the design of the Advanced Research Projects Agency Network (ARPANET) for the United States Department of Defense. The First operational computer network in the world began in the late 1960’s.
4 Interested in more info on ARPANET? Click below to watch the video
5 Properties of a Network Facilitates communicationsPermits sharing of files, data, and other types of informationShare network and computing resources (i.e. network printer)May be insecureMay interfere with other technologiesMay be difficult to set up
6 Types of Network Wiring Twisted pairtelecommunicationCoaxial cableTelevision, office buildings and LANsITU-T b.hnUses home wiring (Coaxial able, phone lines, etc.)Optical Fiber CableGlass fiber
7 Wireless Networks Terrestrial microwave Communications satellites Cellular and PCs SystemsRadio and spread spectrum technologies (Blue Tooth)Infrared CommunicationGlobal Area network (GAN)
8 Network Classifications Personal Area Network (PAN)Local Area Network (LAN)Home Area Network (HAN)Campus Area Network (CAN)Metropolitan Area Network (MAN)Wide Area Network (WAN)Enterprise Private Network
9 Local Area Network (LAN) Computer network that is located within a limited geographical area, such as a school or small businessExampleThe FFJHS Network
10 Wide Area Network (WAN) Interconnected group of computers and peripherals that cover a large geographical area, such as multiple buildingsExamplesThe Davis School District NetworkThe Internet
11 Network Terms File Server Host Computer A computer connected to a network that distributes resources to other usersContains the software to manage and process files for other network usersHost ComputerRefers to any computer that provides services to network usersUsed more commonly with the Internet
12 Network Terms (continued) WorkstationRefers to a personal computer connected to a networkExampleEach computer in the classroomClientRefers to the software on a computer that allows the user to access the serverNovell Netware
13 Network Interface Card (NIC) Small circuit board that coverts the digital signals from a computer into signals that can travel over a networkDesktop Computers have the NIC inside the case with a jack on the outside for the network cableExampleOur classroom computersNotebook or Laptop Computers have a special card that fits into a slot or opening in the case.
14 IP AddressesA unique identifying number assigned to each computer connected to the internetExample –Each computer on a network should have its own separate IP Address or conflicts will occur when there are duplicate addressesIPv6 is the successor to the Internet's first addressing infrastructure
15 WiFiA mechanism for wirelessly connecting electronic devices. A device enabled with Wi-Fi, such as a personal computer, video game console, smartphone, or digital audio player, can connect to the Internet via a wireless network access point.
16 Network Connections Devices ModemA device that sends and receives data to and from computers over telephone lines.HubsA device that connects several components of a networkRoutersA device that connects at least two networksGatewayA device that serves as an entrance to another networkSwitchA network switch or switching hub is a computer networking device that connects network segments or network devicesAll of these can be used alone or in a combination
17 Other Network Services PSNs:Short for packet-switched data network, a data communications network that is based on the principles of packet switching, as opposed to circuit switching that is used in public telephone networksDNSs:Short for Domain Name System (or Service or Server), an Internet service that translates domain names into IP addressesVPNs:Virtual Private Network. A Virtual Private Network is a network that is configured for private use inside of a public network.
18 The End!Use these notes to complete the Review activity and study for the test!
19 ResourcesParsons, June Jamrich, and Dan Oja. Computer Concepts. Boston: Course Technology - Thompson Learning, 2002.