Quiz on Transmission Media

Which type of propagation allows radio waves to travel through the atmosphere hugging the earth?

• Line of sight propagation

• Microwave propagation

• Ground propagation

• Sky propagation

What type of antenna is typically used for transmitting radio waves?

• Directional antenna

• Unidirectional antenna

• Omnidirectional antenna

• Parabolic antenna

Which frequency range is associated with microwaves?

• 3 kHz to 1 GHz

• 1 GHz to 300 GHz

• 300 GHz to 400 THz

• 2 MHz to 30 MHz

What is a disadvantage of microwave communication?

• Can penetrate walls

• Requires omnidirectional antennas

• Operates at low frequencies

• Needs repeaters for long distances

Which of the following is true about infrared waves?

• They can penetrate walls

• They require permission from authorities

• They are used for short-range communication

• They are used for long-distance communication

What is the primary application of radio waves?

• Cellular phones

• Remote controls

• Wireless LANs

• Television and radio broadcasting

Which type of antenna is used for microwave communication?

• Loop antenna

• Dipole antenna

• Omnidirectional antenna

• Unidirectional antenna

What is the data rate characteristic of infrared communication?

• High

• Moderate

• Small

• Very high

Which of the following statements is true regarding the frequency of radio waves?

• They range from 300 GHz to 400 THz

• They range from 1 GHz to 300 GHz

• They are only used for short distances

• They range from 3 kHz to 1 GHz