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ICT II UNIT 5 NETWORKING ICT II UNIT 5 NETWORKING

What is a network? A network is a group of computers connected together in What is a network? A network is a group of computers connected together in such a way as to allow resources to be shared.

What is a network consisted of? A network consists of two or more computers What is a network consisted of? A network consists of two or more computers that are linked in order to share resources (such as printers and CD-ROMs), exchange files, or allow electronic communication.

How are networks connected? Through cables Through telephone lines Through radio waves Through satellites How are networks connected? Through cables Through telephone lines Through radio waves Through satellites Through infrared light beam

Types of Network LAN MAN WAN Types of Network LAN MAN WAN

LAN – Local Area Network Confined relatively to a small area Generally limited to LAN – Local Area Network Confined relatively to a small area Generally limited to a building or a geographical area Expanding no more than a mile apart to other computers

Components of LAN • A file server – stores all of the software that Components of LAN • A file server – stores all of the software that controls the network, as well as the software that can be shared buy the computers attached to the network • A workstation – computer connected to the file server; less powerful than the file server • Cables – used to connect the network interface cards in each computer

LAN LAN

MAN Metropolitan Area Network Covers larger geographical areas, such as cities Often used by MAN Metropolitan Area Network Covers larger geographical areas, such as cities Often used by libraries and government agencies to connect to citizens and private business industries

MAN MAN

WAN Wide Area Network Connects larger geographical areas, such as London, the UK, or WAN Wide Area Network Connects larger geographical areas, such as London, the UK, or the world

WAN WAN

Components of a Network Cables Network adapters cards Hubs -simply connects all of the Components of a Network Cables Network adapters cards Hubs -simply connects all of the devices on its ports together Switches - A switch is like a tiny telephone company that lets pairs of devices make direct connections.

Components of a Network Router - a device that transfers data from one network Components of a Network Router - a device that transfers data from one network to another in an intelligent way Server - computer or device on a network that manages network resource

Our LAN at TMS All of the computer labs & all of the individual Our LAN at TMS All of the computer labs & all of the individual computers in other classrooms make up the TMS LAN. Mrs. Cox’s lab, Mrs. Pleasant’s lab, Mrs. Godown’s lab, and Mrs. Kisner’s lab (and all of the ICT I labs) are considered LAN segments because the computers in each lab are connected together in a kind of smaller network. The computer workstations in each ICT I lab and each ICT II lab are connected by ethernet cables. The cables plug into the network card in each computer.

Our LAN at TMS Each ICT I lab and ICT II lab have switches Our LAN at TMS Each ICT I lab and ICT II lab have switches in them that control the data that flows in and out of the lab. There is a hub switch in all the ICT II labs. The cable from each lab’s switch plugs in to a port on the hub switch. The hub is connected to the ICT server which is located in the main office. The ICT server is connected to a router that gives us access to the Internet.