Question | Answer |
Typically, telephone cabling consists of how many wires? | Two |
The type of cabling where two wires are twisted around each other to prevent signals from one pair leaking into the other | Twisted-pair |
A type of cable that uses pulses of light to transmit data through glass threads | Fiber-optic |
These stop the flow of electrons and reduce the hazard of electrical shock and fire. These devices protect personnel, buildings, and the lab from harmful electricity | Ground Fault Circuit Interrupters (GFCIs) |
Provides a means for various wiring fixtures to interconnect with the grounding system | Bonding |
Minimum distance needed between voice and data cabling and high-voltage wiring | 6 feet, or 1.8 m |
The noise from electrical circuits or devices that can interfere with data signals, thus distorting them and causing general communications problems | Electromagnetic Interference (EMI), |
Can be the most damaging and uncontrollable form of electricity | Electrostatic discharge (ESD), more commonly known as static electricity |
Fire Extinguisher Letter Rating for Ordinary materials (burning paper, lumber, cardboard, plastics) | A |
Fire Extinguisher Letter Rating for Flammable and combustible liquids (gasoline, kerosene, solvents) | B |
Fire Extinguisher Letter Rating covering Electrical equipment such as appliances, switches, panel boxes, and power tools | C |
Fire Extinguisher Letter Rating covering Combustible metals such as magnesium, titanium, potassium, and sodium | D |