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MCQs

Total Questions : 10
Question 1. The sharing of a medium and its link by two or more devices is called _______
  1.    Fully duplexing
  2.    Multiplexing
  3.    Both a and b
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> Multiplexing


None.


Question 2. If there are n signal sources of same data rate than TDM link has _______ slots
  1.    n
  2.    n/2
  3.    n*2
  4.    2^n
 Discuss Question
Answer: Option A. -> n


Each slot is dedicated to one of the source.


Question 3. Which multiplexing technique transmits digital signals ?
  1.    FDM
  2.    TDM
  3.    WDM
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> TDM


FDM and WDM are used in analog signals.


Question 4. Multiplexing is used in _______
  1.    Packet switching
  2.    Circuit switching
  3.    Data switching
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> Circuit switching


None.


Question 5. If link transmits 4000frames per second, and each slot has 8 bits,the transmission rate of circuit this TDM is
  1.    32kbps
  2.    500bps
  3.    500kbps
  4.    None of the mentioned
 Discuss Question
Answer: Option A. -> 32kbps


Transmission rate= frame rate * number os bits in a slot.


Question 6. In TDM, the transmission rate of the multiplexed path is usually _______ the sum of the transmission rates of the signal sources.
  1.    Greater than
  2.    Lesser than
  3.    Equal to
  4.    Equal to or greater than
 Discuss Question
Answer: Option A. -> Greater than


None.


Question 7. The state when dedicated signals are idle are called
  1.    Death period
  2.    Poison period
  3.    Silent period
  4.    None of the mentioned
 Discuss Question
Answer: Option C. -> Silent period


None.


Question 8. In TDM, slots are further divided into
  1.    Seconds
  2.    Frames
  3.    Packets
  4.    None of the mentioned
 Discuss Question
Answer: Option B. -> Frames


None.


Question 9. Multiplexing can provide
  1.    Efficiency
  2.    Privacy
  3.    Anti jamming
  4.    Both a and b
 Discuss Question
Answer: Option D. -> Both a and b


None.


Question 10. Multiplexing technique that shifts each signal to a different carrier frequency
  1.    FDM
  2.    TDM
  3.    Either a or b
  4.    Both a and b
 Discuss Question
Answer: Option A. -> FDM


FDM stands for Frequency division multiplexing.


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