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CSD · Quiz 2 · 3 Aug 2025 (Afternoon)

15 questions · 50 marks · 60 min

Answer key Take as mock

Indian Institute of Technology Madras

BS Degree Programme · Examination & Study Paper

Computer System Design

Quiz 2 · 3 Aug 2025 (Afternoon)

Official Paper

Examination Instructions & Guidelines

Solve on notebook/paper first before checking solutions.
MCQ: Exactly 1 option is correct. Negative marking applies.
MSQ: One or more options correct. Select all to score.
NAT: Numerical response. No negative marking.
Scientific calculator allowed for all calculations.
Official answer key is sealed at the end of this sheet.

Q1MCQ1 Mark·Choose one option
Key ↓
In a J-K flipflop, when J = 1 and K = 1, it toggles the flipflop’s state.
1. ATRUE
2. BFALSE
Q2MCQ1 Mark·Choose one option
Key ↓
A multiplexer is a digital circuit that selects one of the several input signals and forwards it to a single output line.
1. ATRUE
2. BFALSE
Q3MCQ1 Mark·Choose one option
Key ↓
1. ATRUE
2. BFALSE
Q4MCQ1 Mark·Choose one option
Key ↓
In a positive-edge-triggered D flipflop, if the D input is 1 and the clock signal transitions from low to high, Q output is 0.
1. ATRUE
2. BFALSE
Q5MCQ1 Mark·Choose one option
Key ↓
Sequential circuits do not utilize feedback loops, while combinational circuits do.
1. ATRUE
2. BFALSE
Q6MCQ5 Marks·Choose one option
Key ↓
1. A
2. B
3. C
4. D
5. E
Q7MCQ5 Marks·Choose one option
Key ↓
1. A
2. B
3. C
4. D
Q8MCQ4 Marks·Choose one option
Key ↓
1. A
2. B
3. C
4. D
Q9MSQ5 Marks·Choose all correct options
Key ↓
Choose the correct option:
1. A
2. B
3. C
4. D
Q10NAT5 Marks·Write the number
Asked 5 times Key ↓
Your answer:
Q11NAT5 Marks·Write the number
Asked 3 times Key ↓
Your answer:
Q12NAT4 Marks·Write the number
Key ↓
Your answer:
Q13NAT6 Marks·Write the number
Key ↓
Your answer:
Read the passage below, then answer Q14–Q15
Answer the given two subquestions based on the given minterm :
Q14NAT3 Marks·Write the number
Asked 5 times Key ↓
If we want to implement the minimized expression using only 2-input NOR gates, what is the minimum number of NOR gates required, given inputs A, B, C, and D?
Your answer:
Q15NAT3 Marks·Write the number
Asked 4 times Key ↓
If we want to design the given minterm using 2:1 multiplexers, what is the minimum number of multiplexers required?
Your answer:

Official Key

Master Answer Key & Explanations

Official answer keys from IIT Madras BS past papers. Click any question to review.

Reveal Key

Q1A

Q2A

Q3B

Q4B

Q5B

Q6B

Q7D

Q8B

Q9A, D

Q104

Q111001

Q121

Q13111

Q141

Q152

Questions and answer keys are reproduced from the official IIT Madras BS papers. BTechi is not affiliated with IIT Madras.