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Modulation and Communication Techniques Quiz

Authored by SIVANUJA _21IT097

Computers

5th - 6th Grade

Used 2+ times

Modulation and Communication Techniques Quiz
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30 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a form of digital modulation where the amplitude of a carrier signal is varied?

ASK

PSK

FSK

MSK

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In PSK, how does the phase of the carrier signal change?

Randomly

According to a frequency-shift keying pattern

Based on binary data

By modulating the amplitude

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary advantage of MSK over other modulation techniques?

Higher data rates

Reduced bandwidth

Lower bit error rate

Easier synchronization

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which modulation technique uses two frequencies to represent binary data?

ASK

PSK

FSK

MSK

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In Direct Sequence Spread Spectrum (DSSS), what is used to spread the signal?

Frequency-hopping

A pseudo-random code

Orthogonal sequences

Time division multiplexing

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main difference between DSSS and FHSS?

DSSS spreads the signal in time, FHSS spreads it in frequency

FHSS provides higher security than DSSS

FHSS uses a larger bandwidth than DSSS

DSSS requires less power compared to FHSS

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a key characteristic of frequency-hopping spread spectrum (FHSS)?

Wideband transmission

Constant carrier frequency

Changing frequencies according to a predefined pattern

No modulation involved

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