Gujarat Technological UniversitySummer 2026 examination

GTU BE04000251 Computer Organization & Architecture Summer 2026 Question Paper & PDF

B.E. · Common Engineering · Semester 4 · Subject code BE04000251
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Total
70 marks
To pass
23 marks (33%)
Duration
2.5 Hours 10:30 AM – 1:00 PM
Questions
5 with internal choice
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Q.1

14 Marks
(a)
3 marks
Explain the Von Neumann architecture with diagram.
(b)
4 marks

Define the limitations of fixed-point representation. Explain the alternative technique used to solve it with suitable example.

(c)
7 marks
Define the register transfer language. Explain the following RTL operations:
1M[AR] ← DR
2D3T4: AR ← IR(0-11), SC ← 0
3P: R2 ← ashr R2
4D6T4: DR ← M[AR], PC ← PC + 1
5AC ← shl AC, AC(0) ← E, E ← AC(15)

Q.2

14 Marks
(a)
3 marks
Explain the following terms:

Three-State Bus Buffers, memory reference instruction ISZ, register reference instruction SPA.

(b)
4 marks
Explain input-output instructions for basic computer.
(c)
7 marks
Draw and explain flowchart of interrupt cycle.
(c)
7 marks
Draw and explain hardwire control unit for basic computer.

Q.3

14 Marks
(a)
3 marks

Write an assembly language program to perform a logical OR operation using basic computer instructions.

(b)
4 marks
Explain three address and zero address instruction format.
(c)
7 marks

Define the address symbol table. Explain the second pass of assembler with the help of a flowchart.

(a)
3 marks
Explain the following terms:

MRI instruction table, non-MRI instruction table and Pseudo Instruction table.

(b)
4 marks
Explain register stack and memory stack organizations.
(c)
7 marks

Write an assembly language program to perform multiplication of two 8-bit unsigned positive numbers.

Q.4

14 Marks
(a)
3 marks
Draw and explain microinstruction format for microprogrammed control organization.
(b)
4 marks
Explain 5-stage instruction pipeline with example.
(c)
7 marks
Write a brief note on microprogram sequencer with diagram.
(a)
3 marks
Describe the major hazards in pipelined execution.
(b)
4 marks
List out the Flynn’s classification. Explain any one in detail.
(c)
7 marks
Write a brief note on overlapped register windows.

Q.5

14 Marks
(a)
3 marks
Draw and explain the flowchart of CPU-IOP communication.
(b)
4 marks
Discuss various dynamic arbitration algorithms for interprocessor arbitration.
(c)
7 marks
Discuss cache coherence problem and its solutions.
(a)
3 marks
Differentiate between Isolated I/O vs Memory-mapped I/O.
(b)
4 marks

Explain the flowchart of Booth’s multiplication algorithm of signed-2’s complement numbers.

(c)
7 marks
Explain any two types of mapping procedures for cache memory organization.

Other Semester 4 subjects

BE Common

2140001
Mathematics-4
2140003
Engineering Economics and Management
BE04000101
Environmental Science, Sustainability and Renewable Energy
BE04000221
Operating System

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About this paper

Official Gujarat Technological University (GTU) examination paper for Computer Organization & Architecture (Summer 2026, B.E. · Common 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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