An electrical current generated along a network wire when a metal wire encounters the magnetic fields generated by items within an office.

A registered jack (RJ) connector used for telephones, designed to support up to two pairs of wires

An IEEE committee that sets the standards for parallel communication

An early fiber-optic implementation of Ethernet that runs at 10 megabits per second (Mbps) using baseband signaling. Maximum segment length is 2 km, using multimode cabling and employing either an SC or ST connector

A group of standards for networking developed by the IEEE 802.3 subcommittee.

Interference experienced on one cable or channel from signals transmitted on a neighboring cable or channel.

A fire rating that designates the proper cabling to use for vertical runs between floors of a building, indicating that the cable provides less protection than plenum-rated cabling

The outer part of a fiber-optic cable

A device that takes the data frames it receives, and filters and forwards the frames between two or more networks based on the MAC address of the destination node

A networking technology standard, first developed by Xerox, based on a bus topology. It has developed into the IEEE 802.3 standard of specifications.

The ability to survive a failure

Consists of twisted pairs of wires surrounded by shielding to protect them from EMI.

A cabling fire rating assigned to cable made from polyvinyl chloride and which has no significant fire protection, creating lots of smoke and noxious fumes when it burns.

A UTP cable with RJ-45 connectors crimped so one complies with EIA/TIA 568A and the other complies with EIA/TIA 568B, resulting in reversed sending and receiving pairs. Both ends of the cable can receive data eliminating the need for a hub or switch betwe

In a traditional Ethernet network (with hubs rather than switches), a group of nodes that hears each other’s traffic. The traffic in an unswitched Ethernet network is subject to collisions.

The maximum amount of data that can go through a cable.

A designation for fiber-optic cable that uses lasers to generate the signal.

A rating for coaxial cable developed by the U.S. military.

An Ethernet LAN designed to run on UTP cabling. Runs at 10 Mbps and uses baseband signaling. Maximum length for the cabling between the NIC and the hub (or switch or repeater) is 100 meters

The Ethernet term for the Cyclic Redundancy Check (CRC), enables Ethernet nodes to recognize damage to the data in a frame based on an algorithm calculated by the sending NIC using the data bits. The receiving NIC performs the same calculation. If it does

The space between the acoustical tile ceiling in an office building and the actual concrete ceiling above

A relative measurement of impedance on a cable

A registered jack (RJ) connector used for computer networks, designed to support up to four pairs of wires.

In a switched Ethernet network, all the nodes are connected to a single switch, and therefore, able to hear one another’s broadcasts.

Method of sending and receiving data where the device can only send or receive at one time.