Computer Organization and Architecture Unit 3 – Control Unit & Pipelining: AKTU previous year questions
35 AKTU questions from Unit 3 (Control Unit & Pipelining) asked in 2020–2026, tagged by marks, year and topic. In short: about 32 marks of every paper come from this unit; the most asked topic is Instruction Cycle & Micro-operations (13 times); 31 questions came back in a later year. The latest ones are listed below; on the page you can filter them by 2-mark or long questions, topic and repeats.
Unit 3 previous year questions
- Explain different types of instructions. Explain various instruction formats with suitable examples. (7 marks, 2026, Instruction Types & Formats)
- Explain the concept of RISC architecture. Discuss its features and advantages. Compare RISC with CISC architecture. (7 marks, 2026, RISC & Program Control)
- 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, 2026, Pipelining)
- Explain the design and working of a hardwired control unit. Discuss about its advantages and disadvantages. (7 marks, 2026, Hardwired & Microprogrammed Control)
- What are micro-operations? Explain different types of micro-operations. (7 marks, 2026, Instruction Cycle & Micro-operations)
- Discuss the micro operations in computer architecture? (2 marks, 2025, Instruction Cycle & Micro-operations)
- Describe the concept of horizontal and vertical microprogramming in control unit design? (7 marks, 2025, Hardwired & Microprogrammed Control)
- Describe the concept of horizontal and vertical microprogramming in control unit design? (7 marks, 2025, Hardwired & Microprogrammed Control)
- Explain the concept of microprogram sequencing and how it enables the execution of complex instructions through a sequence of microinstructions? (7 marks, 2025, Hardwired & Microprogrammed Control)
- What are the different phases of an instruction cycle? (2 marks, 2024, Instruction Cycle & Micro-operations)
- How does control unit of a computer works? (2 marks, 2024, Instruction Cycle & Micro-operations)
- What is pipelining? What are the different stages of pipelining? Explain in detail. (7 marks, 2024, Pipelining)
Most asked Unit 3 topics
- Instruction Cycle & Micro-operations – asked 13 times
- Hardwired & Microprogrammed Control – asked 12 times
- RISC & Program Control – asked 4 times
Unit 3 question pattern
- 2-mark questions: 12 asked in 2020–2026
- 7-mark questions: 11 asked in 2020–2026
- 10-mark questions: 12 asked in 2020–2026
- About 32 marks from Unit 3 in every paper
- 31 questions were asked again in a later year
Unit 3 questions year by year
- 2026: 5 Unit 3 questions asked (35 marks across that year's papers)
- 2025: 4 Unit 3 questions asked (23 marks across that year's papers)
- 2024: 5 Unit 3 questions asked (25 marks across that year's papers)
- 2023: 6 Unit 3 questions asked (36 marks across that year's papers)
- 2022: 5 Unit 3 questions asked (34 marks across that year's papers)
- 2021: 5 Unit 3 questions asked (34 marks across that year's papers)
- 2020: 5 Unit 3 questions asked (34 marks across that year's papers)