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.
A communications standard for very short-range wireless connections; the devices are automatically connected once they get within the allowable range.
A network consisting of a central cable to which all network devices are attached.
A form of broadcast radio that broadcasts using antennas located inside honeycomb-shaped cells.
A communications medium consisting of a center wire inside a grounded, cylindrical shield, capable of sending data high speeds.
An earth-orbiting device that relays communications signals over long distances.
The transmission of data from one device to another.
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.
A widely used communications protocol for a LAN.
An intranet that is at least partially accessible to authorized outsiders.
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.
A device that is a central location where data arrives and is then transferred in one or more directions.
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.
An earth-based device that sends and receives high-frequency, high-speed radio signals.
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.
Data transmission in which bytes of data are transmitted at one time, with the bits in each byte taking a separate path.
A network that connects devices in a closed loop.
A device on a network that sends data via the most efficient route to travel to a specific location.
Data transmission in which the bits in a byte travel down the same path one after the other.
A network that uses a host device connected directly to several other devices.
A device on a network to which data is sent so it can be forwarded to the appropriate network node.
A communications protocol that uses packet switching to facilitate the transmission of messages; the protocol used with the Internet.
The use of computer and electronic devices to enable an individual to work from his or her home.
A communications protocol that uses token passing to control the transmission of messages.
pair cable -A communications medium consisting of wire strands twisted in sets of two and bound into a cable.
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.
Fi (802.11) -A widely used communications protocol for wireless networks.
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.
A network in which computers and other devices are connected to the network without physical cables; data is typically sent via radio waves.