Computer GK Practice Question and Answer

Q:

Which of the following devices tells the difference between multicast and unicast packets?

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  • 1
    multicast switch
    Correct
    Wrong
  • 2
    developed
    Correct
    Wrong
  • 3
    advanced router
    Correct
    Wrong
  • 4
    multicast router
    Correct
    Wrong
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Answer : 1. "multicast switch"
Explanation :

Multicast switch


Q:

Which of the following are Operators in C?

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  • 1
    arithmetic operators
    Correct
    Wrong
  • 2
    logical operator
    Correct
    Wrong
  • 3
    relational operators
    Correct
    Wrong
  • 4
    all of the above
    Correct
    Wrong
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Answer : 4. "all of the above"
Explanation :

Operators are symbols that we use when performing operations on one or more operands. The primary types of operators in C are arithmetic, logical, relational, conditional, bitwise, and assignment.

Q:

Why is clrscer() used?

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  • 1
    to erase
    Correct
    Wrong
  • 2
    to clear the message from the screen
    Correct
    Wrong
  • 3
    to store
    Correct
    Wrong
  • 4
    for all of the above
    Correct
    Wrong
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Answer : 2. "to clear the message from the screen"
Explanation :

The clrscr in C is a built-in function that is used for clearing the screen of the console output during the execution of the C program. This function is defined in the conio. h header file. We need to include the “conio.

Q:

What is the difference between do-while and while condition?

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  • 1
    In do-while, a semicolon is used after the condition.
    Correct
    Wrong
  • 2
    Semicolon is not used in While
    Correct
    Wrong
  • 3
    While statement is after the condition
    Correct
    Wrong
  • 4
    none of the above
    Correct
    Wrong
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Answer : 4. "none of the above"
Explanation :

The key difference lies in when the loop condition is checked. In the while loop, the condition is checked before the first iteration, potentially resulting in zero iterations. In the do-while loop, the condition is checked after the first iteration, ensuring that the loop body is executed at least once.

Q:

Which of the following is not true for for-loop?

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  • 1
    for (i=0; i
    Correct
    Wrong
  • 2
    for (int i=0; i>9; i++)
    Correct
    Wrong
  • 3
    for (i=10; i
    Correct
    Wrong
  • 4
    for (i=10; i++; i
    Correct
    Wrong
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Answer : 4. "for (i=10; i++; i"
Explanation :

Among the given statements about for loops, the one that is NOT true is that they are used to replace user input while loops. While for loops are typically used for iterations with a known count and are less likely to result in an infinite loop if used correctly, they do not specifically replace user input while loops.

Q:

Integrated circuit is related to which generation of computer?

436 0

  • 1
    first generation
    Correct
    Wrong
  • 2
    second generation
    Correct
    Wrong
  • 3
    third generation
    Correct
    Wrong
  • 4
    fourth generation
    Correct
    Wrong
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Answer : 3. "third generation"
Explanation :

Integrated circuits (ICs) were first introduced during the third generation of computers. The third generation of computers, which emerged in the 1960s, saw the development and widespread use of integrated circuits. These tiny electronic circuits contained multiple transistors, resistors, and capacitors on a single semiconductor chip. The use of integrated circuits significantly reduced the size of computers, increased their processing speed, and improved their reliability, marking a significant advancement in computer technology.

Q:

Plotter is an output device that prints _______ etc. on hard copy.

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  • 1
    chart
    Correct
    Wrong
  • 2
    Graph
    Correct
    Wrong
  • 3
    drawing
    Correct
    Wrong
  • 4
    all of the above
    Correct
    Wrong
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Answer : 4. "all of the above"
Explanation :

A plotter is an output device that prints vector graphics on hard copy. Unlike printers, which are designed for raster graphics and text, plotters are specialized devices used to produce high-quality drawings, diagrams, and other vector-based illustrations. Plotters use pens or other drawing tools to create precise lines and shapes on paper, making them particularly useful for applications that require detailed and accurate graphical output, such as architectural and engineering designs.

Q:

________ is an output device that is used for TV Like displays the output on the screen and it is also called visual display unit.

501 0

  • 1
    Printer
    Correct
    Wrong
  • 2
    monitor
    Correct
    Wrong
  • 3
    Plotter
    Correct
    Wrong
  • 4
    Projector
    Correct
    Wrong
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Answer : 2. "monitor"
Explanation :

An output device that is used for TV-like displays and shows the output on the screen is indeed called a monitor. It is also commonly referred to as a visual display unit (VDU). Monitors and VDUs are used to display visual information from computers and other electronic devices, allowing users to view text, images, videos, and other graphical content. They come in various types, including CRT (Cathode Ray Tube), LCD (Liquid Crystal Display), LED (Light Emitting Diode), and OLED (Organic Light Emitting Diode) monitors.

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