Classification Criteria | MCQs
مندرجہ ذیل میں سے کون سا ان پٹ ڈیوائس نہیں ہے؟
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A. Monitor and Speaker
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B. Keyboard
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C. Scanner and Joystick
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D. Microphone and Mouse
Explanation
Input Devices: Used to send data to a computer (e.g., microphone, mouse, keyboard, scanner, joystick).Output Devices: Display or produce data from a computer (e.g., monitor, speaker).
مندرجہ ذیل میں سے کون سا سسٹم سافٹ ویئر نہیں ہے؟
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A. Operating System
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B. Driver
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C. Entertainment
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D. Utility Software
Explanation
Entertainment is not a system software.
System software includes programs like operating systems, utility software, and drivers that manage hardware and run the computer.
While entertainment refers to applications for leisure purposes.
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A. Irrational number
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B. Negative integer
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C. Rational number
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D. Even integer
Explanation
- Every natural number can be expressed as a ratio of integers (itself divided by 1), making them rational numbers.
- Natural numbers are a subset of rational numbers.
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A. A
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B. Neither A nor B
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C. Both A and B
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D. B
Explanation
- A function f from A to B is called an onto function (or surjective function) if its range is equal to the codomain B.
- In other words, every element in B is the image of at least one element in A.
- This means that the function covers all the elements in the codomain B, and no element in B is left out.
- So, the correct answer is B.
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