COA PYQ 2025-26 AKTU (BCS302) Question Paper

AKTU · BTECH · Semester 3 · Computer Organization and Architecture · Session 2025-26 · PYQ

AKTU Computer Organization and Architecture (BCS302) previous year question paper 2025-26 for B.Tech Semester 3. Covers Introduction & Processor…

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Computer Organization and Architecture AKTU syllabus

  1. Unit 1: Introduction & Processor Organization
  2. Unit 2: Arithmetic & Logic Unit
  3. Unit 3: Control Unit & Pipelining
  4. Unit 4: Memory
  5. Unit 5: Input / Output Organization

Questions in Computer Organization and Architecture AKTU PYQ 2025-26

  1. Q1a. What is a bus? Explain different types of buses used in a computer system. (2 marks, 2025-26)
  2. Q1b. Explain the functional units of a digital computer system. (2 marks, 2025-26)
  3. Q1c. Explain bus architecture and its role in interconnecting various components of a digital system. (2 marks, 2025-26)
  4. Q1d. What is a register? Explain general-purpose and special-purpose registers. (2 marks, 2025-26)
  5. Q1e. Explain the working of carry look-ahead adder with the help of an example. (2 marks, 2025-26)
  6. Q1f. Explain signed number multiplication using Booth’s Algorithm. Multiply A × B where A= –5 and B=3 using Booth’s Algorithm. (2 marks, 2025-26)
  7. Q1g. Explain floating-point representation and its components. (2 marks, 2025-26)
  8. Q2a. Multiply the following numbers using Array Multiplier technique: A = 1101, B = 1011 (7 marks, 2025-26)
  9. Q2b. Explain the design of an Arithmetic and Logic Unit. Describe various arithmetic and logical operations performed by ALU. (7 marks, 2025-26)
  10. Q2c. Explain floating point arithmetic operations. Perform floating point addition using IEEE 754 format for (5.75)₁₀ + (–2.5)₁₀. (7 marks, 2025-26)
  11. Q2d. Explain different types of instructions. Explain various instruction formats with suitable examples. (7 marks, 2025-26)
  12. Q2e. Explain the concept of RISC architecture. Discuss its features and advantages. Compare RISC with CISC architecture. (7 marks, 2025-26)
  13. Q3a. Explain instruction pipelining. A pipeline has 5 stages and each stage takes 20 ns. i. Calculate the time required to execute 10 instructions without pipelining. ii. Calculate the execution time with pipelining. iii. Find the speedup. (7 marks, 2025-26)
  14. Q3b. Explain the design and working of a hardwired control unit. Discuss about its advantages and disadvantages. (7 marks, 2025-26)
  15. Q4a. What are micro-operations? Explain different types of micro-operations. (7 marks, 2025-26)
  16. Q4b. Explain the memory hierarchy with diagram. A memory chip has a capacity of 64K × 8. i. Find the number of address lines required. ii. How many such chips are needed to design a 256K × 16 memory system? (7 marks, 2025-26)
  17. Q5a. Explain the following cache mapping techniques: i. Direct Mapping ii. Associative Mapping iii. Set-Associative Mapping (7 marks, 2025-26)
  18. Q5b. Explain 2D and 2½D memory organization. Write their advantages and disadvantages. (7 marks, 2025-26)
  19. Q6a. What is an I/O interface? Explain its functions. Why is an interface required between CPU and I/O devices? (7 marks, 2025-26)
  20. Q6b. Define and differentiate synchronous and asynchronous communication with example. (7 marks, 2025-26)
  21. Q7a. Explain the concept of interrupts. Describe interrupt hardware and explain different types of interrupts. (7 marks, 2025-26)
  22. Q7b. Explain the working of Direct Memory Access. Describe the DMA controller and its advantages over other I/O methods. (7 marks, 2025-26)

AKTU paper codes: BCS302, KCS302, BCS302H, KCS302H

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