Jamia Millia Islamia Computer Previous Year Questions (PYQs) – Page 21 of 29
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Showing 284 questions
Which of the following is true about machine language?
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Solution
Machine language consists of binary instructions executed directly by the CPU and is specific to a particular machine architecture.
The universal gate is …
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Solution
NAND and NOR are universal; here option is NAND.
Which of the following group consists of volatile memory?
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Solution
Volatile memory loses data when power is off.
Both RAM and Cache are volatile memories.
The C programming language uses which of the following data types to store real numbers?
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Solution
Real numbers (decimal values) are stored using floating-point data types such as float or double. In MCQ context, the expected answer is float.
The inputs of a NAND gate are connected together. The resulting circuit is
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Solution
NAND with tied inputs gives ¬(A·A)=¬A → NOT gate.
Let A and B be two sets containing 2 elements and 4 elements respectively.
The number of subsets of $A \times B$ having 3 or more elements is:
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Solution
$|A| = 2, |B| = 4 \Rightarrow |A \times B| = 8$
Total subsets of 8 elements = $2^8 = 256$
Subsets with less than 3 elements = $1 + 8 + 28 = 37$
Subsets with 3 or more elements = $256 - 37 = 219$
What is the full form of BIOS?
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Solution
BIOS is firmware stored in ROM that initializes hardware and starts the boot process when the computer is powered on.
Exclusive-OR (XOR) logic gates can be constructed from _____ logic gates.
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Solution
Standard realization uses AND, OR, NOT.
If A, B and C are three sets such that $A \cap B = A \cap C$ and $A \cup B = A \cup C$, then:
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Solution
Given $A \cap B = A \cap C$ and $A \cup B = A \cup C$
These conditions hold only if $B = C$.
The 2’s complement of the binary number $(10101000)_2$ is …
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Solution
Step 1: Find 1’s complement → $(10101000)_2 \Rightarrow (01010111)_2$.
Step 2: Add 1 → $(01010111)_2 + 1 = (01011000)_2$.
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