OMIS 351 Quiz 3
Terms
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- Computer network
- A group of two or more computer systems linked together using wires or radio waves over a geographical area
- Wireless
- Computer networks that do not use physical wires
- Benefits of a network
- the ability to communicate and the ability to share
- Groupware
- software that supports team interaction and dynamcis including calendaring, scheduling, and videoconferencing
- Benefits of computer networking
- 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.
- Topology
- Actual physical organization of the computers including connections
- Bandwidth
- indicates how much information can be carried in a given time period over a wired or wireless communications link
- 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 - Physical Topology
- actual physical organization of the computers on the network and its connections
- Bus topology
- 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
- Star topology
- 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
- Ring topology
- 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.
- Tree topology
- combines the characteristics of the bus and star topologies. It consists of groups of star configured workstations connected to a liner bus backbone.
- Wireless topology
- 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
- Protocol
- predefined way that someone talks with or utilizes that service.