Quadrature Amplitude Modulation and Constellation Diagrams Exam Questions Answered Correctly
(Graded A+)
Physical Layer - Answers Layer responsible for encoding, modulation, switching, and multiplexing in
network communication.
Modulation - Answers Converting digital signals to analog signals or changing analog signals'
frequencies.
QAM - Answers Quadrature Amplitude Modulation changes both amplitude and phase.
Demodulation - Answers Converting analog signals back to digital signals.
Encoding - Answers Converting data bits to digital signals.
Multiplexing - Answers Connecting several slower links to share a high-speed link.
ASK - Answers Amplitude Shift Keying changes only amplitude.
FSK - Answers Frequency Shift Keying changes only frequency.
PSK - Answers Phase Shift Keying changes only phase.
Baud Rate - Answers Number of signal units per second in digital communication.
Design Tables - Answers Matching bit values with signal levels for modulation schemes.
Attenuation - Answers Signal weakening during transmission.
Distortion - Answers Signal alteration during transmission.
Noise - Answers Interference affecting signal quality.
Phase Shift - Answers Changing the phase of a waveform.
Amplitude Levels - Answers Different levels of signal strength.
Phase Shifts - Answers Different angles of phase change in a signal.
Constellation Diagram - Answers Graphical representation of signal combinations in modulation.
Dot - Answers Representation of signal instance in a constellation diagram.
Quadrants - Answers Four sections dividing a constellation diagram.
Sampling - Answers Method to convert analog signals to digital signals by capturing signal values at
specific intervals.
(Graded A+)
Physical Layer - Answers Layer responsible for encoding, modulation, switching, and multiplexing in
network communication.
Modulation - Answers Converting digital signals to analog signals or changing analog signals'
frequencies.
QAM - Answers Quadrature Amplitude Modulation changes both amplitude and phase.
Demodulation - Answers Converting analog signals back to digital signals.
Encoding - Answers Converting data bits to digital signals.
Multiplexing - Answers Connecting several slower links to share a high-speed link.
ASK - Answers Amplitude Shift Keying changes only amplitude.
FSK - Answers Frequency Shift Keying changes only frequency.
PSK - Answers Phase Shift Keying changes only phase.
Baud Rate - Answers Number of signal units per second in digital communication.
Design Tables - Answers Matching bit values with signal levels for modulation schemes.
Attenuation - Answers Signal weakening during transmission.
Distortion - Answers Signal alteration during transmission.
Noise - Answers Interference affecting signal quality.
Phase Shift - Answers Changing the phase of a waveform.
Amplitude Levels - Answers Different levels of signal strength.
Phase Shifts - Answers Different angles of phase change in a signal.
Constellation Diagram - Answers Graphical representation of signal combinations in modulation.
Dot - Answers Representation of signal instance in a constellation diagram.
Quadrants - Answers Four sections dividing a constellation diagram.
Sampling - Answers Method to convert analog signals to digital signals by capturing signal values at
specific intervals.
