# Practice Quiz in Data and Signals Part 3

Online Practice Quiz in Data and Signals part 3 from the book Data Communications and Networking 4th Edition by Behrouz A. Forouzan.

This is the Online Practice Quiz in Data and Signals part 3 from the book, Data Communications and Networking 4th Edition by Behrouz A. Forouzan. If you are looking for a reviewer in Electronics Systems and Technologies (Communications Engineering) this will definitely help you test your knowledge and skill before taking the Board Exam.

### Continue Part III of the Online Practice Quiz

#### Quiz in Data and Signals

Question 21. Baseband transmission of a digital signal is possible only if we have a ____ channel.

A. bandpass

B. low-pass

C. high rate

D. low rate

Question 22. Data can be ________.

A. digital

B. analog

C. (a) or (b)

D. none of these

Question 23. _______ data are continuous and take continuous values.

A. digital

B. analog

C. (a) or (b)

D. none of these

Question 24. A sine wave is ________.

A. periodic and discrete

B. aperiodic and discrete

C. periodic and continuous

D. aperiodic and continuous

Question 25. _____ signals can have an infinite number of values in a range.

A. Analog

B. Digital

C. (a) or (b)

D. None of these

Question 26. Frequency and period are ______.

A. proportional to each other

B. inverse of each other

C. the same

D. none of these

Question 27. ________is the rate of change with respect to time.

A. Time

B. Frequency

C. Amplitude

D. Voltage

Question 28. If the available channel is a ____ channel, we cannot send a digital signal directly to the channel.

A. low-pass

B. low rate

C. bandpass

D. high rate

Question 29. For a ______ channel, we need to use the Shannon capacity to find the maximum bit rate.

A. noiseless

B. noisy

C. low-pass

D. bandpass

Question 30. When propagation speed is multiplied by propagation time, we get the ________.

A. wavelength of the signal

B. throughput

C. distance a signal or bit has traveled

D. distortion factor

Question 31. A signal is measured at two different points. The power is P1 at the first point and P2 at the second point. The dB is 0. This means ________.

A. P2 equals P1

B. P2 is zero

C. P2 is much larger than P1

D. P2 is much smaller than P1

Question 32. Before data can be transmitted, they must be transformed to ________.

A. periodic signals

B. electromagnetic signals

C. aperiodic signals

D. low-frequency sine waves

Question 33. Signals can be ________.

A. digital

B. analog

C. either (a) or (b)

D. neither (a) nor (b)

Question 34. _______ data have discrete states and take discrete values.

A. Analog

B. Digital

C. (a) or (b)

D. None of these

### More Practice Quiz in Data and Signals

Practice Quiz Part 1

Practice Quiz Part 2

Practice Quiz Part 3

### Complete Practice Quiz in Data Communications and Networking

Note: After taking this particular quiz, you can proceed to check all the topics.

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