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OS Chp 15 Terms
| Term | Definition |
|---|---|
| 100BaseT | An Ethernet standard that operates at 100 Mbps and uses twisted-pair cabling up to 100 meters (328 feet). Also called Fast Ethernet. Variations of 100BaseT are 100BaseTX and 100BaseFX. |
| Bandwidth | The range of frequencies that a communications channel or cable can carry. In general use, the term refers to the volume of data that can be transmitted on a bus or over a cable stated in bps,Kbps, Mbps, or Gbps. Also called data throughput or line speed |
| Base Station | A fixed transceiver and antenna used to create one cell within a cellular network |
| BNC Connector | A connector used with thin coaxial cable. Some BNC connectors are T-shaped and called T-connectors. One end of the T connects to the NIC, and the two other ends can connect to cables or end a bus formation with a terminator. |
| Bridge | A device that stands between two segments of a network and manages network traffic between them |
| Broadband | A transmission technique that carries more than one type of transmission on the same medium, such as voice and DSL on a regular telephone line |
| Cable Internet | A broadband technology that uses cable TV lines and is always connected (always up). |
| Cable Tester | A tool used to test a cable to find out if it is good or to find out what type of cable it is if the cable is not labeled. |
| CAT-3 | A rating formally used for unshielded twisted-pair (UTP) cables on a network, and is currently used for phone lines. |
| CAT-5 | rating used for unshielded twisted-pair (UTP) cables and is rated for Fast Ethernet, but is seldom used today. |
| CAT-5e | A rating used for unshielded twisted-pair (UTP) cables, rated for Fast Ethernet and Gigabit Ethernet, and is popular today. |
| CAT-6 | A rating used for twisted-pair cables that has less crosstalk than CAT-5e cables. CAT-6 cables might contain a plastic cord down the center of the cable that helps to prevent crosstalk, but is less flexible and more difficult to install than CAT-5e. |
| CAT-6a | A rating used for twisted-pair cables that is thicker and faster than CAT-6 and rated 10GBase-T |
| CAT-6e | An unofficial name for CAT-6a. |
| CAT-7 | A rating used for twisted-pair cables that have shielding to almost completely eliminate crosstalk and improve noise reduction. |
| Cellular Network | A network that can be used when a wireless network must cover a wide area. The network is made up of cells, each controlled by a base station. Also called a cellular WAN |
| Cellular WAN | A network that can be used when a wireless network must cover a wide area. The network is made up of cells, each controlled by a base station. |
| Coaxial Cable | A cable that has a single copper wire down the middle and a braided shield around it. |
| Crimper | A tool used to attach a terminator or connector to the end of a cable. |
| Crossover Cable | A cable used to connect two like devices such as a hub to a hub or a computer to a computer (to make the simplest network of all). A crossover cable is not rated for Gigabit Ethernet. |
| Data Throughput | The range of frequencies that a communications channel or cable can carry. In general use, the term refers to the volume of data that can be transmitted on a bus or over a cable stated in bps,Kbps, Mbps, or Gbps. |
| DSL (Digital Subscriber Line) | A telephone line that carries digital data from end to end, and is used as a type of broadband Internet access |
| Ethernet over Power (EoP) | Powerline networking |
| Extender | A device that amplifies and re transmits a wireless signal to a wider coverage area and retains the original network name. |
| F Connector | A connector used with an RG-6 coaxial cable and is used for connections to a TV and has a single copper wire. |
| Fast Ethernet | An Ethernet standard that operates at 100 Mbps and uses twisted-pair cabling up to 100 meters (328 feet).Variations of 100BaseT are 100BaseTX and 100BaseFX. |
| Ferrite Clamp | A clamp installed on a network cable to protect against electrical interference |
| Fiber Optic | As applied to Internet access technologies, a dedicated, leased line that uses fiber-optic cable from the Internet service provider (ISP) to a residence or place of business. |
| Fiber-optic Cable | Cable that transmits signals as pulses of light over glass or plastic strands inside protected tubin |
| Gigabit Ethernet | A version of Ethernet that supports rates of data transfer up to 1 gigabit per second |
| Hub | A network device or box that provides a central location to connect cables and distributes incoming data packets to all other devices connected to it. Compare with switch. |
| ifconfig (interface configuration) | A Linux and OS X command similar to the Windows ipconfig command that displays details about network interfaces and can enable and disable an interface. When affecting the interface, the command requires root privileges. |
| Internet Service Provider (ISP) | A commercial group that provides Internet access for a monthly fee; Charter, Earthlink, and Windstream are large ISPs. |
| ipconfig (IP configuration) | A Windows command that displays TCP/IP configuration information and can refresh TCP/IP assignments to a connection, including its IP address. |
| ISDN (Integrated Services Digital Network) | A broadband telephone line that can carry data at about five times the speed of regular telephone lines. Two channels (telephone numbers) share a single pair of wires. ISDN has been replaced by DSL. |
| Keystone RJ-45 Jack | A jack that is used in an RJ-45 wall jack. |
| LAN (local area network) | A network bound by routers that usually covers only a small area, such as one building. |
| Latency | Delays in network transmissions resulting in slower network performance. Latency is measured by the round-trip time it takes for a data packet to travel from source to destination and back to source. |
| LC (Local connector) connector | A fiber-optic cable connector that can be used with either single-mode or multimode fiber-optic cables and is easily terminated and smaller than an SC connector. |
| Line-of-Sight Connectivity | A type of connection used by satellites that requires no obstruction from mountains, trees, and tall buildings from the satellite dish to the satellite. |
| Loopback Plug | A device used to test a port in a computer or other device to make sure the port is working and might also test the throughput or speed of the port |
| MAN (metropolitan area network) | A type of network that covers a large city or campus. |
| Mobile Hotspot | Created by a mobile device so that other devices or computers can connect by Wi-Fi to the device and on to the Internet. |
| MT-RJ (mechanical transfer registered jack) connector | A type of connector used by fiber-optic cables and can be used with either single-mode or multimode fiber-optic cables and is more difficult to connect than the smaller LC connector |
| nbstat (NetBIOS over TCP/IP statistics) | A Windows TCP/IP command that is used to display statistics about the NetBT protocol. |
| Net Localgroup | A Windows TCP/IP command that adds, displays, or modifies local user groups. |
| Net Use | A Windows TCP/IP command that connects or disconnects a computer from a shared resource or can display information about connections. |
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