Free H12-311_V3.0 Exam Braindumps (page: 18)

Page 17 of 75

DSSS The modulation methods used are BPSK and QPSK .

  1. True
  2. False

Answer(s): A



Spread spectrum ( spread-spectrum ) Technology is to use ISM The basis of frequency band transmission of wireless data.

  1. True
  2. False

Answer(s): A



Radio frequency mainly uses spread spectrum technology.
Which of the following technologies belong to spread spectrum technology ()? (Select 2 Answers)

  1. FHSS
  2. DSSS
  3. QPSK
  4. OFDM

Answer(s): A,B



MIMO The antenna configuration is usually expressed as " M*N ",in M and N What does each mean ()?
(Select 2 Answers)

  1. M Indicates the number of transmission antennas
  2. N Indicates the number of transmission antennas
  3. N Indicates the number of receiving antennas
  4. M Indicates the number of receiving antennas

Answer(s): A,C






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