Data Transmission in Cables

The video explores why fiber-optic cables are faster than copper wires. It covers the history of copper wire usage and the advent of fiber optics, explaining how fiber optics use light pulses for data transmission, offering higher throughput and less signal loss over long distances. The video also discusses the advantages of fiber optics, such as greater bandwidth and resistance to interference, making them superior for many applications despite higher costs.

What was the primary material used for long-distance telecommunications before fiber optics?

• Fiber optic cable

• Copper wire

• Plastic wire

• Aluminum wire

How do fiber optic cables transmit data?

• Via pulses of light

• By magnetic fields

• Using sound waves

• Through electrical currents

What is the phenomenon called when a signal deteriorates over distance in copper cables?

• Signal distortion

• Signal amplification

• Signal attenuation

• Signal reflection

What is the main factor that determines the speed of data transmission in cables?

• The material of the cable

• The color of the cable

• The length of the cable

• The throughput or capacity

Which type of cable has a higher bandwidth capacity?

• Aluminum wire

• Copper wire

• Fiber optic cable

• Plastic wire

Why are fiber optic cables less susceptible to interference compared to copper wires?

• They are made of metal

• They use electrical currents

• They are thicker

• They are made of glass or special plastics

How many telephone calls can a local area network using modern copper lines handle at one time?

• 1,000 calls

• 10,000 calls

• 31,000 calls

• 3,000 calls

What is the key difference in data transmission between fiber optic and copper cables?

• Fiber optic uses sound waves

• Copper uses light pulses

• Copper has higher bandwidth

• Fiber optic has higher frequency range

What happens to the signal quality of copper wire over long distances?

• It becomes faster

• It deteriorates

• It improves

• It remains unchanged

Which cable type is more cost-effective for short distances?

• Aluminum wire

• Copper wire

• Plastic wire

• Fiber optic cable