vu cs101 Mid Term Subjective Solved Past Paper No.6

vu cs101 Introduction to Computing Solved Past Papers

This subjective solved past paper is related to book/course code vu cs101 Introduction to Computing which belongs to vu organization. We have 13 past papers available related to the book/course Introduction to Computing. This past paper has a total of 10 subjective questions belongs to topic Mid Term to get prepared. NVAEducation wants its users to help them learn in an easy way. For that purpose, you are free to get prepared for exams by learning subjective questions online on NVAEducatio.

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Question 1: How noise effect on ASK? What do you know about On-Off Keying (OOK) technique?

Answer:

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Question 2: In your view which one is best either B8ZS or HDB3 and why. Write down salient features of both.

Answer:

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Question 3: The data points of a constellation are at (4,0) and (6,0). Draw the constellation. Show the amplitude and phase for each point. Is the modulation ASK, PSK, or QAM. How many bits per baud can one send with this constellation

Answer:

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Question 4: What do you know about DTE and DCE?

Answer:

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Question 5: What do you understand by the term DCE. Explain DCE.

Answer:

Any device that transmits or receives signal through network is DCE.

It is any functional unit that transmits or receives data in the form of an analog or digital signal through a network.

At the physical layer DCE takes data generated by DTE, converts it to the signal.

(PAGE 101)

Question 6: What is digital signal. Give an example

Answer:

A digital signal is discrete. It can have only a limited number of defined values, often as simple as 1s and 0s The transition of a digital signal from value to value is instantaneous like a light being switched ON and OFF. (page 57)

Question 7: What is frequency spectrum?

Answer:

Frequency spectrum is the collection of all the components frequencies it contains. (PAGE 66)

Question 8: What is HDB3.

Answer:

Alteration of AMI adopted in Europe and Japan introduces changes into AMI, every time four consecutive zeros are encountered instead of waiting for eight zeros as in the case of B8ZS. (P78)

Question 9: What is meant by polarity of 1 since the last substitution?

Answer:

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Question 10: What is periodic signal?

Answer:

A signal is called Periodic if it completes a pattern within a measurable time frame called a Period and then repeats that pattern over identical subsequent Periods (page58)