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Author name: Umar

Umar Draz is a Pakistani educationist, academic writer, and researcher known for his contributions in the field of education and competitive exam preparation. He is the author of the widely used educational book “Nucleus of Education”, which serves as a key reference for candidates preparing for teaching and public service commission examinations in Pakistan.

Collecting personal information and effectively posing as another individual is known as the crime of                             ?

Computer MCQs for Competitive Exams

Computers process data into information by working exclusively with                           ?

A. Multimedia
B. Word
C. Numbers
D. Characters
$s).

  • Step 1 (Digital Representation): Computers do not natively understand human language, graphics, or audio waveforms. Every piece of input data—whether it is text, a sound wave, or a color pixel—must undergo digitization.
  • Step 2 (The CPU Layer): This digitization converts assets into numerical values. The Central Processing Unit (CPU) and its integrated Arithmetic Logic Unit (ALU) execute math operations exclusively on these numbers to generate the processed information displayed on screens.
  • Incorrect Options:
    • multimedia is incorrect because files like videos or audio clips are high-level abstractions that must be translated into raw binary arrays before a system can process them.
    • word is incorrect because text strings are mapped directly to corresponding numeric values (such as ASCII or Unicode values) to be recognized by computer hardware.
    • characters is incorrect because individual alphabet letters or symbols are represented under the hood by structural code numbers.

“]$s).

  • Step 1 (Digital Representation): Computers do not natively understand human language, graphics, or audio waveforms. Every piece of input data—whether it is text, a sound wave, or a color pixel—must undergo digitization.
  • Step 2 (The CPU Layer): This digitization converts assets into numerical values. The Central Processing Unit (CPU) and its integrated Arithmetic Logic Unit (ALU) execute math operations exclusively on these numbers to generate the processed information displayed on screens.
  • Incorrect Options:
    • multimedia is incorrect because files like videos or audio clips are high-level abstractions that must be translated into raw binary arrays before a system can process them.
    • word is incorrect because text strings are mapped directly to corresponding numeric values (such as ASCII or Unicode values) to be recognized by computer hardware.
    • characters is incorrect because individual alphabet letters or symbols are represented under the hood by structural code numbers.

“]

Computer MCQs for Competitive Exams

The device used to carry digital data on analogue lines is called as                    ?

A. Modem
B. Multiplexer
C. Modulator
D. Demodulator
$s), while traditional infrastructure (like telephone lines) transmits continuous analog wave audio signals.

  • Step 2 (Signal Transition): The modem resolves this discrepancy by converting outgoing digital data into analog waves (modulation) and translating incoming analog signals back into binary code (demodulation).
  • Incorrect Options:
    • Multiplexer is incorrect because a multiplexer merges multiple independent data streams into a single high-speed transmission channel, rather than executing analog-to-digital transformations.
    • Modulator is incorrect on its own because it only covers half of the bidirectional communication cycle, representing the digital-to-analog outbound phase.
    • Demodulator is incorrect on its own because it only accounts for the incoming analog-to-digital processing phase.
  • “]$s), while traditional infrastructure (like telephone lines) transmits continuous analog wave audio signals.

  • Step 2 (Signal Transition): The modem resolves this discrepancy by converting outgoing digital data into analog waves (modulation) and translating incoming analog signals back into binary code (demodulation).
  • Incorrect Options:
    • Multiplexer is incorrect because a multiplexer merges multiple independent data streams into a single high-speed transmission channel, rather than executing analog-to-digital transformations.
    • Modulator is incorrect on its own because it only covers half of the bidirectional communication cycle, representing the digital-to-analog outbound phase.
    • Demodulator is incorrect on its own because it only accounts for the incoming analog-to-digital processing phase.
  • “]

    Computer MCQs for Competitive Exams

    A self replicating program, similar to a virus which was taken from a 1970s science fiction novel by John Bruner entitled the Shockwave Rider is                      ?

    Computer MCQs for Competitive Exams

    What type of resource is most likely to be a shared common resource in a computer Network?

    A. Printers
    B. Speakers
    C. Floppy disk drives
    D. Keyboards
    Network?” option1=”Printers” option2=”Speakers” option3=”Floppy disk drives” option4=”Keyboards” correct=”Printers” explanation=””]

    Computer MCQs for Competitive Exams

    What is the main difference between a mainframe and a super computer?

    A. Super computer is much larger than mainframe computers
    B. Super computers are much smaller than mainframe computers
    C. Supercomputers are focused to execute few programs as fast as possible while mainframe uses its power to execute as many programs concurrently
    D. Supercomputers are focused to execute as many programs as possible while mainframe uses its power to execute few programs as fast as possible.

    Computer MCQs for Competitive Exams
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