Question 1 : Which system makes the detection difficult for all users other than the intended users?
1. Low probability of intercept
2. Low probability of detection
3. Low probability of intercept & detection
4. None of the mentioned
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Question 2 : Which is more bandwidth efficient?
1. Direct sequence spread spectrum
2. Frequency hopping spread spectrum
3. Time hopping spread spectrum
4. None of the mentioned
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Question 3 : Uncertainty in the delay measurement is _________ to the bandwidth of signal pulse.
1. Directly proportional
2. Inversely proportional
3. Not related
4. None of the mentioned
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Question 4 : Which is more simpler to implement?
1. Direct sequence spread spectrum
2. Frequency hopping spread spectrum
3. Time hopping spread spectrum
4. None of the mentioned
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Question 5 : Frequency planning is very essential in
1. FDMA
2. TDMA
3. FDMA & TDMA
4. None of the mentioned
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Question 6 : Each satellite has ______ transponders.
1. 10
2. 12
3. 15
4. 18
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Question 7 : In digital communication, interaction between ______ is possible.
1. Any layer to layer
2. One layer to next layer
3. layers
4. None of the mentioned
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Question 8 : TDM is used to
1. Increase the information transmission rate
2. Use only one carrier frequency to handle different signals
3. To use different frequency bands for different signals
4. To protect all small signals in PCM from quantizing noise
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Question 9 : As the number of carriers, the capacity of the transponder
1. Increases
2. Decreases
3. Remains the same
4. None of the mentioned
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Question 10 : Random access is
1. Distributed
2. Fault tolerant
3. Distributed & Fault tolerant
4. None of the mentioned
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