Intro Comp Chapt 7
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Created by:
amidpoppies on October 8, 2010
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Description:
vocab
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36 terms
Terms | Definitions |
|---|---|
 Bandwidth | The amount of data that can be transmitted over a communications medium at one time; higher bandwidth media deliver data faster than lower bandwidth media. |
| Bluetooth | A communications standard for very short-range wireless connections; the devices are automatically connected once they get within the allowable range. |
| Bus network | A network consisting of a central cable to which all network devices are attached. |
| Cellular radio | A form of broadcast radio that broadcasts using antennas located inside honeycomb-shaped cells. |
| Coaxial cable | A communications medium consisting of a center wire inside a grounded, cylindrical shield, capable of sending data high speeds. |
| Communications satellite | An earth-orbiting device that relays communications signals over long distances. |
| Communications | The transmission of data from one device to another. |
| Computer network | A collection of computers and other hardware devices that are connected together to share hardware, software, and data, as well as to communicate electronically with one another. |
| Ethernet | A widely used communications protocol for a LAN. |
| Extranet | An intranet that is at least partially accessible to authorized outsiders. |
| Fiberoptic cable | A communications medium that utilizes hundreds of hair-thin, transparent fibers over which lasers transmit data as light. |
| Global positioning system (GPS) | A system that uses satellites and a receiver to determine the exact geographic location of the receiver. |
| Hub | A device that is a central location where data arrives and is then transferred in one or more directions. |
| Intranet | A private network that is set up similar to the Internet and is accessed via a Web browser. |
| Local area network (LAN) | A network that connects devices located in a small geographical area, such as within a building. |
| Microwave station | An earth-based device that sends and receives high-frequency, high-speed radio signals. |
| Modem | A communications device that enables digital computers to communicate over analog media, such as connecting to the Internet via telephone lines. |
| Network interface card (NIC) | An expansion card through which a computer can connect to a network. |
| Parallel transmission | Data transmission in which bytes of data are transmitted at one time, with the bits in each byte taking a separate path. |
| Ring network | A network that connects devices in a closed loop. |
| Router | A device on a network that sends data via the most efficient route to travel to a specific location. |
| Serial transmission | Data transmission in which the bits in a byte travel down the same path one after the other. |
| Star network | A network that uses a host device connected directly to several other devices. |
| Switch | A device on a network to which data is sent so it can be forwarded to the appropriate network node. |
| TCP/IP | A communications protocol that uses packet switching to facilitate the transmission of messages; the protocol used with the Internet. |
| Telecommuting | The use of computer and electronic devices to enable an individual to work from his or her home. |
| Token Ring | A communications protocol that uses token passing to control the transmission of messages. |
| Twisted | pair cable -A communications medium consisting of wire strands twisted in sets of two and bound into a cable. |
| Videoconferencing | A real-time meeting that takes place between people in different locations via computers and communications media. |
| Virtual private network (VPN) | A group of secure paths over the Internet that provide authorized users a secure means of accessing a private network via the Internet. |
| Wide area network (WAN) | A network that connects devices located in a large geographical area. |
| Wi | Fi (802.11) -A widely used communications protocol for wireless networks. |
| Wired network | A network in which computers and other devices are connected to the network via physical cables. |
| Wireless access point | A device used to connect wireless devices to a wired network. |
| Wireless Application Protocol (WAP) | A standard for delivering content, such as Web pages, to mobile devices. |
| Wireless network | A network in which computers and other devices are connected to the network without physical cables; data is typically sent via radio waves. |
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