Signal Encoding Techniques Quiz

Frequency Division Multiplexing (FDM) works by:

• Multiplying the signal by the bandwidth.

• Dividing a communication channel into multiple frequency bands.

• Using the same frequency for different signals.

• Multiplying the number of users on the same bandwidth.

In Amplitude Shift Keying (ASK), data is represented by varying the:

• Phase of the signal

• Frequency of the signal

• Amplitude of the signal

• Timing of the signal

Which signal encoding technique is best suited for environments with high noise?

• Amplitude Shift Keying (ASK)

• Phase Shift Keying (PSK)

• Frequency Shift Keying (FSK)

• Unipolar Encoding

In Quadrature Amplitude Modulation (QAM), data is encoded using changes in:

• Amplitude only

• Frequency only

• Both amplitude and phase

• Phase only

Which of the following factors is important when comparing encoding schemes?

• Signal spectrum

• Cost and complexity

• Signal interference

• All of the above

In Manchester encoding, what is used to represent a binary 1?

• A constant positive voltage

• A transition from high to low

• A constant negative voltage

• No signal at all

Pulse Code Modulation (PCM) is used to:

• Encode analog data into digital signals.

• Encode digital data into analog signals.

• Modulate radio frequencies.

• Multiplex multiple channels into one.

Which encoding technique involves dividing a communication channel into smaller frequency bands for each signal?

• Frequency Shift Keying (FSK)

• Amplitude Shift Keying (ASK)

• Frequency Division Multiplexing (FDM)

• Pulse Code Modulation (PCM)

Which of the following encoding techniques is commonly used in optical fiber communication?

• Unipolar Encoding

• Amplitude Modulation (AM)

• Frequency Shift Keying (FSK)

• Phase Shift Keying (PSK)

In digital communication, clocking is important because:

• It reduces bandwidth.

• It keeps the transmitter and receiver synchronized.

• It increases noise tolerance.

• It allows for frequency division.