Wireless Data Transmission Quiz

What allows devices to communicate without physical connections?

• Wireless data transmission

• Wired data transmission

• Optical data transmission

What is typically used for short-range communication?

• Infrared light

• Radio waves

• Microwaves

What type of waves are commonly used for WiFi?

• Infrared light

• Radio waves

• Sound waves

What must the transmitter and receiver be within for effective infrared signal transmission?

• Direct line of sight

• Indirect line of sight

• No line of sight

What is a characteristic of diffused infrared transmission?

• Focused beam

• Spread-out signal

• Long-range communication

What is the distance between two wave crests or troughs called?

• Wavelength

• Frequency

• Amplitude

What is the time delay between sending and receiving data called?

• Bandwidth

• Latency

• Throughput

What does analog modulation vary to represent the data signal?

• Amplitude

• Frequency

• Phase

What is the method of encoding data by changing the frequency of the carrier wave?

• Amplitude Modulation

• Frequency Modulation

• Phase Modulation

What does Phase Shift Keying vary to represent data?

• Amplitude

• Frequency

• Phase