1.
PCM is the type of analog modulation 

 Answer : False

2.
RJ45 connector is used for LAN 

Answer
: True

3. A
signal having frequency 1KHz is used modulate the carrier signal with frequency
1MHz and amplitude twice of the signal. The modulated signal will be 

Answer:
Under modulated

4.
The HLR has information of 

Answer
: Local subscriber

5.
frequency modulation is 

Answer
: Changing the frequency of the carrier with respect to the amplitude of
information signal

6.
The bandwidth of the AM signal is 

Answer
: 2Fm

7.
The telephone traffic has ___ Distribution 

Answer
: Poisson

8.
Which of the following is not a pulse modulation 

Answer
: PCM

9.
For a signal 4*sin*1540t, the minimum sampling frequency required will be 

Answer
: 490.19Hz

10.
What is modulation 

Answer
: Shifting the information signal to the carrier frequency

11.
Which of the following devices is used to generate AM waves? 

Answer
: Square-law modulator

12.
For getting 100% modulation, carrier amplitude should ________ 

Answer
: be equal to signal amplitude

13.
The biggest disadvantage of PCM is— 

Answer
: The large bandwidths that are required for it

14.
Indicate which of the following pulse modulation systems is analog? 

Answer
: PWM

15.
The modulation system inherently most noise-resistant is— 

Answer
: Pulse-code modulation