C) FDM requires a single channel, while TDM requires multiple channels

D) TDM is a type of analog modulation, while FDM is digital

A) FDM uses different frequencies to carry signals, while TDM uses time slots

B) FDM is used for digital signals, while TDM is used for analog signals

• B) M-PSK reduces the transmission bandwidth by a factor of m

A) M-PSK requires more bandwidth for the same transmission rate

D) M-PSK is less power efficient than BPSK

C) M-PSK increases the complexity of the system without reducing bandwidth

C) Amplitude Modulation (AM)

D) Pulse Modulation

B) Phase Modulation (PM)

A) Frequency Modulation (FM)

B) Non-Random Zero-Level Encoding

• C) Non-Reversible Zero-Level Encoding

D) New Return Zero Encoding

A) Non-Return to Zero Level

C) It is more efficient than Amplitude Modulation (AM)

D) It is used primarily in digital communication

A) It requires less bandwidth than other modulation schemes

B) It delivers no information about the carrier to the receiver

A) Sampling

C) Encoding

D) Modulation

B) Quantizing

C) 20 kHz

D) 30 kHz

B) 10 kHz

A) 5 kHz

D) Amplitude Modulation (AM)

A) Binary Frequency Shift Keying (BFSK)

C) Quadrature Phase Shift Keying (QPSK)

B) Binary Phase Shift Keying (BPSK)

B) Data is transmitted in both directions, but not at the same time

D) Data is only received, not transmitted

C) Data is transmitted and received simultaneously

A) Data is transmitted in one direction only

C) To modify the carrier signal with information from the message signal

D) To reduce noise in the system

• To decode the signal

B) To recover the message signal at the receiver