Aspire's Library

A Place for Latest Exam wise Questions, Videos, Previous Year Papers,
Study Stuff for MCA Examinations
  • Jamia Millia Islamia MCA
    Previous Year Questions

Jamia Millia Islamia MCA Previous Year Questions (PYQs)

Jamia Millia Islamia MCA Digital Logic PYQ

Jamia Millia Islamia MCA PYQ
The expression of an XOR gate is —





Go to Discussion
Jamia Millia Islamia MCA Previous Year PYQ Jamia Millia Islamia MCA JAMIA MILLIA ISLAMIA MCA 2024 PYQ

Solution

The logical expression for XOR (Exclusive OR) is true when inputs are different, therefore its expression is $A'B + AB'$.
Jamia Millia Islamia MCA PYQ
Multiply 1101 by 1011 (binary multiplication):





Go to Discussion
Jamia Millia Islamia MCA Previous Year PYQ Jamia Millia Islamia MCA JAMIA MILLIA ISLAMIA MCA 2023 PYQ

Solution

$1101_2 = 13_{10}$ $1011_2 = 11_{10}$ $13 \times 11 = 143_{10}$ Convert $143_{10}$ to binary: $143_{10} = 10001111_2$
Jamia Millia Islamia MCA PYQ
Minimum number of two-input NAND gates used to perform the function of two-input OR gate is





Go to Discussion
Jamia Millia Islamia MCA Previous Year PYQ Jamia Millia Islamia MCA JAMIA MCA 2017 PYQ

Solution

$A + B = \text{NAND}(\text{NAND}(A,A), \text{NAND}(B,B))$. Hence, $3$ NAND gates required. $\boxed{3}$
Jamia Millia Islamia MCA PYQ
Which logic gate outputs true only if both inputs are true?





Go to Discussion
Jamia Millia Islamia MCA Previous Year PYQ Jamia Millia Islamia MCA JAMIA MILLIA ISLAMIA MCA 2025 PYQ

Solution

 AB Output 
 00 0 
0 1 0 
1 0 0 
1 1 1 
Jamia Millia Islamia MCA PYQ
What is the purpose of a multiplexer ?





Go to Discussion
Jamia Millia Islamia MCA Previous Year PYQ Jamia Millia Islamia MCA JAMIA MILLIA ISLAMIA MCA 2025 PYQ

Solution

 A multiplexer (MUX) selects one of many input signals and forwards it to a single output line using control signals.
Jamia Millia Islamia MCA PYQ
Which logic gate is used to perform the NOT operation on an input ?





Go to Discussion
Jamia Millia Islamia MCA Previous Year PYQ Jamia Millia Islamia MCA JAMIA MILLIA ISLAMIA MCA 2025 PYQ

Solution

A NOT operation inverts the input. Among the options, NOR can act as a NOT gate when one input is fixed at 0.
Jamia Millia Islamia MCA PYQ
The universal gate is …





Go to Discussion
Jamia Millia Islamia MCA Previous Year PYQ Jamia Millia Islamia MCA JAMIA MILLIA ISLAMIA MCA 2022 PYQ

Solution

NAND and NOR are universal; here option is NAND. 
Jamia Millia Islamia MCA PYQ
The inputs of a NAND gate are connected together. The resulting circuit is 





Go to Discussion
Jamia Millia Islamia MCA Previous Year PYQ Jamia Millia Islamia MCA JAMIA MILLIA ISLAMIA MCA 2022 PYQ

Solution

NAND with tied inputs gives ¬(A·A)=¬A → NOT gate.
Jamia Millia Islamia MCA PYQ
____ truth table entries are necessary for a four-input circuit.





Go to Discussion
Jamia Millia Islamia MCA Previous Year PYQ Jamia Millia Islamia MCA JAMIA MILLIA ISLAMIA MCA 2022 PYQ

Solution

 Number of input combinations = 2^4 = 16. 
Jamia Millia Islamia MCA PYQ
Which of the following logic gates produces true only when one input is true and the other is false?





Go to Discussion
Jamia Millia Islamia MCA Previous Year PYQ Jamia Millia Islamia MCA JAMIA MILLIA ISLAMIA MCA 2025 PYQ

Solution

OR gate outputs 1 only when inputs are different.
 AB Output 
0 0 0 
0 1 1 
1 0 1 
1 1 0 

Jamia Millia Islamia MCA PYQ

A technique used by codes to convert an analog signal into a digital bit stream is known as —






Go to Discussion
Jamia Millia Islamia MCA Previous Year PYQ Jamia Millia Islamia MCA JAMIA MILLIA ISLAMIA MCA 2024 PYQ

Solution

The process of converting an analog signal into a digital signal using coding is called Pulse Code Modulation (PCM).
Jamia Millia Islamia MCA PYQ
An electronic path that sends signals from one part of computer to another is —





Go to Discussion
Jamia Millia Islamia MCA Previous Year PYQ Jamia Millia Islamia MCA JAMIA MILLIA ISLAMIA MCA 2024 PYQ

Solution

A Bus is an electronic communication path that transfers data and signals between different parts of a computer.

Jamia Millia Islamia MCA

Online Test Series,
Information About Examination,
Syllabus, Notification
and More.

Click Here to
View More

Jamia Millia Islamia MCA

Online Test Series,
Information About Examination,
Syllabus, Notification
and More.

Click Here to
View More
Limited Seats
× Aspire MCA Promotion

Game Changer NIMCET Test Series 2026

Boost your preparation with mock tests, analysis and rank-focused practice.

JOIN NOW
Ask Your Question or Put Your Review.

loading...