Gujarat Technological UniversityWinter 2025 examination

GTU 3140707 Computer Organization & Architecture (COA) Winter 2025 Question Paper & PDF

B.E. · Computer Engineering · Semester 4 · Subject code 3140707
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Total
70 marks
To pass
23 marks (33%)
Duration
2.5 Hours 2:30 PM – 5:00 PM
Questions
5 with internal choice
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16 of 25 questions on this paper were also asked in other years. Each is marked below with the years it appeared.See all 37 repeated 3140707 questions, most asked first

Q.1

14 Marks
(a)
3 marks
Explain following terms in brief.
1Effective address 2. BSA instruction 3. Micro-operation
(b)
4 marks
Explain any two shift micro-operations with examples.
(c)
7 marks

What is an assembler? Explain basic computer’s assembler with flow charts.

Q.2

14 Marks
(a)
3 marksAsked in 4 of 7 papers
Differentiate RISC and CISC architecture.

Also asked in Summer 2025 Q5b OR, Winter 2024 Q3c, Summer 2023 Q5b OR

(b)
4 marks
Explain 5-stage instruction pipeline with example.
(c)
7 marksAsked in 2 of 7 papers
Describe the control unit of the basic computer with block diagram.

Also asked in Summer 2025 Q2c OR

(c)
7 marksAsked in 3 of 7 papers
What is an interrupt? Explain interrupt cycle with flowchart.

Also asked in Summer 2025 Q3c OR, Summer 2024 Q5b OR

Q.3

14 Marks
(a)
3 marksAsked in 5 of 7 papers

Write the Flynn’s classification of parallel processing and briefly explain any one class.

Also asked in Summer 2026 Q5a OR, Summer 2025 Q5c OR, Summer 2024 Q3b OR, Summer 2023 Q3a

(b)
4 marks
Draw a 4-bit incrementer circuit using full adder.
(c)
7 marksAsked in 6 of 7 papers
Explain any seven addressing modes with appropriate example.

Also asked in Summer 2026 Q3c, Summer 2025 Q3b OR, Winter 2024 Q4a, Summer 2024 Q3c, Summer 2023 Q1c

(a)
3 marksAsked in 3 of 7 papers
List all the major difficulties in pipeline and briefly explain any one

Also asked in Winter 2024 Q3a, Summer 2023 Q3a OR

(b)
4 marksAsked in 4 of 7 papers
Explain address sequencing in the micro programmed control unit

Also asked in Summer 2025 Q4a OR, Winter 2024 Q3b, Winter 2023 Q2a

(c)
7 marks

Write the importance of the overlapped register window? Compute window size and total number of register for following window organization. Number of window=4, Global register =5, local register in each window= 5 and common register to two window = 3.

Q.4

14 Marks
(a)
3 marksAsked in 2 of 7 papers
Briefly explain the Daisy-Chaining priority.

Also asked in Winter 2024 Q5b

(b)
4 marksAsked in 2 of 7 papers
Write short note on the DMA.

Also asked in Summer 2023 Q4a

(c)
7 marksAsked in 3 of 7 papers
Explain the booth’s algorithm with an appropriate example.

Also asked in Summer 2026 Q5b OR, Winter 2023 Q1c

(a)
3 marksAsked in 2 of 7 papers
Explain source-initiated asynchronous data transfer using handshaking.

Also asked in Winter 2024 Q4b OR

(b)
4 marks
Write short note on the input-output processor.
(c)
7 marks
Draw and explain flow chart for the floating point multiplication.

Q.5

14 Marks
(a)
3 marksAsked in 4 of 7 papers

What is the cache coherence? What is the solution to cache coherence problem?

Also asked in Winter 2024 Q5c OR, Summer 2024 Q5c, Summer 2023 Q5c

(b)
4 marksAsked in 3 of 7 papers
Compare tightly coupled and loosely coupled multiprocessors.

Also asked in Winter 2024 Q5a OR, Summer 2024 Q5a

(c)
7 marksAsked in 4 of 7 papers
List various cache mappings. Explain any one in detail.

Also asked in Winter 2024 Q4c, Summer 2024 Q4c, Summer 2023 Q5c OR

(a)
3 marksAsked in 2 of 7 papers
What are the characteristics of multiprocessors?

Also asked in Summer 2026 Q5c

(b)
4 marks
Explain the 8 * 8 omega switching network with diagram.
(c)
7 marksAsked in 2 of 7 papers
Why is the virtual memory? Explain the address mapping in detail.

Also asked in Winter 2024 Q4c OR

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About this paper

Official Gujarat Technological University (GTU) examination paper for Computer Organization & Architecture (COA) (Winter 2025, B.E. · Computer Engineering, Sem 4). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.

Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.

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