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15 Cards in this Set
- Front
- Back
Computer network
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A group of two or more computer systems linked together using wires or radio waves over a geographical area
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Wireless
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Computer networks that do not use physical wires
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Benefits of a network
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the ability to communicate and the ability to share
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Groupware
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software that supports team interaction and dynamcis including calendaring, scheduling, and videoconferencing
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Benefits of computer networking
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ot cam stpre virtually any kind of information at, and retrieveit from, acentral location on the network as well as access it from any connected computer.
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Topology
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Actual physical organization of the computers including connections
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Bandwidth
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indicates how much information can be carried in a given time period over a wired or wireless communications link
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LAN, WAN, MAN
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connects network devices over a relatively short distance, such as a building or a campus
geographically dispersed telecommunications network, such as the Internet interconnects users with computer resources in a geographic area or region larger than that covered by even a large local area network MAN is smaller than WAN |
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Physical Topology
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actual physical organization of the computers on the network and its connections
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Bus topology
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all devices are connected to a central cable, called the bus or backbone. Bus networks are relatively inexpensive and easy to install for small networks
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Star topology
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all devices are connected to a central device, called a hub. Star networks are relatively easy to install and manage, but bottlenecks can occur because all data must pass through the hub
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Ring topology
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all devices are connected to one another in the shape of a closed loop, so that each device is connected directly to two toher devices, one on either side of it.
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Tree topology
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combines the characteristics of the bus and star topologies. It consists of groups of star configured workstations connected to a liner bus backbone.
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Wireless topology
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devices are connected by a receiver/transmitter to a special network interface card that transmits signals between a computer and a server, all within an acceptable transmission range
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Protocol
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predefined way that someone talks with or utilizes that service.
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