module b | Business/Accounting Test Bank

Business Data Networks and Security, 10e (Panko) Module B More on Modulation 1) Amplitude modulation uses two ________ levels. A) loudness B) frequency C) both A and B Answer: A 2) Phase modulation uses two ________ levels. A) loudness B) frequency C) wave D) none of the above Answer: C 3) BPSK uses ________ phase levels. A) 2 B) 4 C) 8 D) 15 Answer: A 4) BPSK modulation uses two ________. A) amplitudes B) frequencies C) phases D) none of the above Answer: C 5) QPSK modulation uses ________ phases. A) 2 B) 4 C) 8 D) 15 Answer: B 6) QPSK sends ________ bit(s) per clock cycle. A) 1 B) 2 C) 4 D) 16 Answer: B 7) QAM uses ________. A) amplitude modulation B) phase modulation C) both A and B D) neither A nor B Answer: C 8) QAM uses ________ levels. A) loudness B) frequency C) both A and B D) neither A nor B Answer: A 9) In QAM, if you have four possible amplitudes, you have ________ possible states. A) 4 B) 8