Cst 140 Unit 1 Terms

Front 1

the implementation of Gigabit Ethernet running over multimode fiber-optic cable (instead of copper twisted pair). Uses short wavelength laser.

Back 1

1000BaseSX

Front 2

Most commonly known as Gigabit Ethernet, allows 1000Mbps throughput on standard twisted-pair copper cabling at Category 5e or higher.

Back 2

1000Base-TX

Front 3

The degradation of a signal over distance that affects the propogation of waves and signals in electrical circuits, optical fibers, as well as in the air.

Back 3

Attenuation

Front 4

A generalized term defining a primary cable or system that connects networks together.

Back 4

Backbone

Front 5

Digital signaling that has only one signal on the cable at a time. The signals are in one of three states- one, zero, or idle.

Back 5

Baseband Signaling

Front 6

A configuration wherin all computer connect to the network via a central bus cable called a backbone.

Back 6

Bus Topology

Front 7

A type of cable used in network wiring used in 10Base2 and 10Base5. The cable has a single solid-core of copper surrounded by a plastic sheath and shielded with a copper/tin mesh.

Back 7

Coaxial Cabling

Front 8

Cable used to connect two computers together via NICs without the use of a hub.

Back 8

Crossover Cable

Front 9

A type of interference that occurs when two LAN cables run close to each other. If one cable is carrying a signal and the other isn't, the one carrying a signal will induce a "ghost" signal in the other cable.

Back 9

Crosstalk

Front 10

A type of signaling that sends multiple signals (channels) over the cable at the same time. The best example of broadband signaling is cable television. The zero, one, and idle states exist on multiple channels on the same cable.

Back 10

Broadband Signaling

Front 11

A high-speed channel for transmitting data, made of high-purity glass sealed within an opaque tube. Faster that conventional copper wire such as coaxial cable.

Back 11

Fiber-Optic Cable

Front 12

Describes any device that can send and receive data simultaneously.

Back 12

Full-Duplex

Front 13

A group of PCs connected together via cabling, radio, or infrared that use this connectivity to share resources such as printers and mass storage.

Back 13

LAN (Local Area Network)

Front 14

Mesh topology is not common in computer networking. with Mesh topology, every workstation has a connection to every other component of the network.

Back 14

Mesh Topology

Front 15

a standard defined by the International Standards Organization to categorize the process of network communication between computers in terms of "layers"

Back 15

OSI Model

Front 16

A central wiring point for multiple devices on a network which contains no electronic circuits. Usually they are on server rooms or located near switches or hubs to provide an easy means of patching over wall jacks or hardwire.

Back 16

Patch Panel

Front 17

A network topology that connects the computers in a circular fashion. If one fails, the entire network fails, so this topology is rarely used.

Back 17

Ring Topology

Front 18

A modular connection mechanism that allows for as many as 4 copper wires. Used primarily in telephone connections.

Back 18

RJ-11

Front 19

A modular mechanism that allows for as many as 8 copper wires. Used primarily in network interface connections.

Back 19

RJ-45

Front 20

A port on a computer that is typically 9-pins and uses Serial communication. Being phased out by USB.

Back 20

RS-232

Front 21

A popular cabling for networks composed of pairs of wires twisted around each other at specific intervals. The twists serve to reduce interference. The more twists, the less interference. The cable has metallic shielding to protect the wires form external interference. Older Token Ring networks are the only common network technology that uses this cabling.

Back 21

Shielded Twisted Pair (STP)

Front 22

A cable used to connect a host to a switch or hub. Both ends of the cable use the same wiring pinout.

Back 22

Straight-through Cable.

Front 23

A popular type of cabling for telephones and networks, composed of pairs of wires twisted around each other at specific intervals. The twists serve to reduce interference (also called crosstalk). The more twists, the less interference. The cabling has no metallic shielding to protect the wires from external interference, unlike its cousin, STP.

Back 23

Unshielded Twisted Pair (UTP) cabling

Front 24

A technology that allows users on different switch ports to participate in their own network separate from, but still connected to, the other stations on the came or connected switch.

Back 24

VLAN

Front 25

A network that uses the public Internet as a backbone for private interconnection (network) between locations.

Back 25

VPN