Data Communications MCQs Quiz

Data Communications MCQs Quiz. This is the 1st post for ICS Part-I | 1st Year Computer Science Chapter No.3. The MCQs (Multiple Choice Questions) given in this post, are very important for the final exams and for entry tests for admission.

 

We have tried our best to make the conceptual MCQs | Quiz from this chapter (Data Communications). This post covers the different types of topics such as data communications, components of data communications, encoder/decoder, analog signals, digital signals, data representation, coding schemes (BCD, EBCDIC, ASCII, and Unicode), Modem, and data communication modes.

  

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➤ Data Communication - MCQs Quiz Set-II 
➤ Data Communication - Short Questions
➤ Information Networks - Short Questions & Answers
➤ Information Networks - MCQs | Online Quiz

Chapter 3: Data Communications

MCQs Online Quiz-1

 

1. A sound wave is sampled followings number of times to convert it into digital code?
   1.   44500
   2.   44056
   3.   65536
   4.   65535
2. A technique in which digital signals are placed onto the transmission line after modulation?
   1.   broadband signal
   2.   baseband signal
   3.   baseband + broadband
   4.   none of these
3. BCD supports ___ bit code?
   1.   4
   2.   7
   3.   8
   4.   16
4. Bending of light as it passes from one medium to another is called?
   1.   reflection
   2.   refraction
   3.   deflection
   4.   none of these
5. Following type of communication requires cheaper hardware?
   1.   parallel
   2.   serial
   3.   parallel + serial
   4.   none of these
6. In fiber optics, the cladding is sheltered in a plastic layer called?
   1.   core
   2.   stand
   3.   jacket
   4.   none of these
7. The communication media which transmits data in straight line?
   1.   satellite
   2.   microwave
   3.   optical
   4.   satellite + microware
8. In which of the following, data is transmitted in both directions simultaneously?
   1.   simplex
   2.   half duplex
   3.   full duplex
   4.   none of these
9. The data communication is not possible without?
   1.   sender
   2.   receiver
   3.   communication media
   4.   all of these
10. The device used for modulation and demodulation is?
    1.   encoder
    2.   modem
    3.   router
    4.   none of these
11. The device which converts digital signals into transmittable format?
    1.   data converter
    2.   communication medium
    3.   encoder
    4.   decoder
12. The distance between communication satellites and earth is approximately?
    1.   20,000 miles
    2.   21,300 miles
    3.   22,300 miles
    4.   23,300 miles