Digital Modulation Techniques Quiz

What is the primary function of a communication system?

• To reduce power consumption

• To establish a connection for information exchange

• To store data permanently

• To enhance audio quality

Which of the following is an example of an analog communication system?

• Digital Television

• Internet Communication

• VoIP

• AM Radio

What type of signals does a digital communication system use?

• Mixed signals

• Discrete (binary) signals

• Analog signals

• Continuous signals

Which modulation technique varies the amplitude of the carrier wave?

• Quadrature Phase Shift Keying

• Phase Shift Keying

• Frequency Shift Keying

• Amplitude Shift Keying

What is a key advantage of digital communication systems?

• Higher susceptibility to noise

• Lower data compression

• Error detection and correction

• Simpler hardware requirements

In which modulation technique is the phase of the carrier wave changed?

• Amplitude Modulation

• Frequency Modulation

• Phase Shift Keying

• On-Off Keying

What is the main disadvantage of digital communication systems?

• Increased noise resistance

• Higher complexity

• Lower data rates

• Better security

Which of the following is NOT a basic digital modulation technique?

• Amplitude Shift Keying

• Frequency Shift Keying

• Phase Shift Keying

• Time Division Multiplexing

What does the term 'bandwidth utilization' refer to in digital communication?

• The efficiency of data transmission

• The power consumption of the system

• The amount of data transmitted over a channel

• The type of modulation used

What is the purpose of a modulator in a digital communication system?

• To convert digital data into an analog signal

• To compress data for transmission

• To detect errors in the received signal

• To store data for future use