Jamia Millia Islamia Computer Previous Year Questions (PYQs) – Page 26 of 29
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What is the full form of CPU?
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Solution
CPU is the main component that performs calculations and executes instructions.
The binary of the decimal number 219 is …
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Solution
Divide 219 by 2 repeatedly:
$219_{10} = (11011011)_2$.
Which of the following is a correct form of a function declaration in C?
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Solution
A function declaration must include the return type and function name.
The Octal equivalent of the Hexadecimal number $(A07)_{16}$ is …
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Solution
Convert $(A07)_{16}$ → binary:
$A = 1010,\ 0 = 0000,\ 7 = 0111$
$\Rightarrow (101000000111)_2$.
Now group in 3 bits for octal: $(101)(000)(000)(111) = (5007)_8$.
Which of the following is an example of a secondary storage device?
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Solution
Secondary storage devices store data permanently. SSD is a non-volatile storage device.
If $(27)_5 = 141$, then the missing digit is …
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Solution
$(2x7)_8 = 141_{10} \Rightarrow 2\times8^2 + x\times8 + 7 = 141$.
$128 + 8x + 7 = 141 \Rightarrow 8x = 6 \Rightarrow x = \dfrac{6}{8}=0.75$.
But $x$ must be a digit (integer), so $x=2$.
Which function is used to find the length of a string in C?
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Solution
The strlen() function in the string.h library returns the length of a string excluding the null character.
Example:
strlen("hello") = 5
Which of the following is a high-level programming language?
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Solution
COBOL (Common Business-Oriented Language) is a high-level programming language.
What is the number of subsets of a set containing 5 elements?
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Solution
The number of subsets of a set containing n elements is given by:$2^n$ For n = 5:
$2^5$= 32
One Gigabyte is approximately equal to —
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Solution
$1\ \text{GB} \approx 10^9\ \text{bytes} = 1{,}000{,}000{,}000\ \text{bytes}$
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