Which of the following transimmision medium uses light signal for data transmission?Select one:a.Twisted pairb.Coaxial cablec.Optical fibre cabled.Wi-Fi

Breakdown the Problem

1. Identify the transmission mediums listed in the choices.
2. Determine which of these uses light signals for data transmission.

Relevant Concepts

• Twisted Pair: Utilizes electrical signals for data transmission.
• Coaxial Cable: Also uses electrical signals.
• Optical Fibre Cable: Uses light signals for data transmission.
• Wi-Fi: Relies on radio signals for wireless communication.

Analysis and Detail

1. Twisted Pair: Commonly used in telephone and Ethernet networks, it consists of pairs of copper wires twisted together. It is known for transmitting data through electrical voltage changes.

2. Coaxial Cable: Composed of a central conductor, insulating layer, metallic shield, and outer insulating layer. Like a twisted pair, it also transmits data through electrical signals, typically used for cable television and internet.

3. Optical Fibre Cable: This medium is specifically designed to transmit data as light signals. It uses the principle of total internal reflection to carry light along the fiber, which allows for high-speed and high-capacity data transmission over long distances with low loss.

4. Wi-Fi: Utilizes radio waves to transmit data wirelessly, functioning through access points connected to a network.

Verify and Summarize

Among the options provided, only optical fibre cable uses light signals for data transmission, while the others rely on electrical or radio signals.

Final Answer

c. Optical fibre cable