BCASemester 32025-26Computer OrganizationBBC304

Computer Organization (BBC304) - AKTU Question Paper 2025-26

BCA · Semester 3 · Free PDF Download

This is the official AKTU Computer Organization Previous Year Question Paper for BCA Semester 3, academic session 2025-26. Published by Dr. A.P.J. Abdul Kalam Technical University (AKTU/UPTU), Lucknow. Free PDF download — no login required.

Course:BCA

Semester:Semester 3

Session:2025-26

University:AKTU / UPTU

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Questions Asked in 2025-26

Computer Organization (BBC304) — complete question paper · 70 marks · 3 Hours

Section AAttempt all q u e s t i o n s i n b r i e f . 2 x 07 = 14

a
Describe the working of a comm on bus system in a processor. 1
b
Explain the limitations of ripple carry adders. 1
c
Explain the fundamental concepts of control unit operation. 2
d
Explain multiple bus orga nization in a CPU. 2
e
How do register files improve i nstruction execution efficiency compared to accumulator based designs
f
Describe the functions performed by an I/O interface between C PU and peripheral devices
g
Explain memory hierarchy wit h suitable examples 5

Section BAttempt any three o f t h e f o l l o w i n g : 7 x 3 = 21

a
Explain Register Transfer La nguage as a tool for describing microoperations. How does RTL help in bridging hardware design and algorithmic thinking
b
Describe the complete executi on cycle of an instruction. Exp lain fetch, decode, execute, and write-back phases using control signals and timing steps
c
Describe stack organization in processors. Explain stack bas ed instruction execution and compare it with general register organization
d
Describe interrupt handling in detail. Explain interrupt priority, masking, and the sequence of events during interrupt servicing
e
Explain cache memory organization. Discuss mapping technique s, replacement policies, and write strategies in detail

Section CAttempt any one p a r t o f t h e f o l l o w i n g : 07 x 1 = 07

a
Explain Booth’s multiplication algorithm in detail. Why is i t preferred over simple multiplication methods for signed numbers. Discuss its advantages and limitations
b
Explain the design and functioning of an Arithmetic Logic Sh ift Unit. How are arithmetic, logical, and sh ift microoperations integrated w ithin a single hardware unit
a
Explain microinstruction sequencing in a microprogrammed con trol unit. Discuss wide branch addressing, n ext-address field, and the rol e of microinstruction prefetching
b
Compare hardwired control a nd microprogrammed control units. Explain their design approaches, speed differences, flexibility, and real-world applications
a
Explain various addressing modes used in processors. How do addressing modes influence instruction flexibility, program size, and execution speed
b
Explain the concept of Reduced Instruction Set Computer. Discuss its design philosophy, advantages over CISC, and impact on compiler design
a
Explain the concept of an Input Output Processor. How does i t differ from DMA. Discuss its role in large scale computer systems
b
Explain Direct Memory Access. How does DMA improve system performance. Discuss DMA controller operation and bus arbitration
a
Explain memory management hardware in modern processors. Dis cuss the role of MMU, TLB, and protection mechanisms
b
Explain virtual memory concep t. Describe paging mechanism, p age tables, and address translation hardware

Question text is extracted from the official AKTU question paper PDF above. Hindi translations are omitted — every question is printed in English in the original paper. Last verified: 2026-08-23.

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