Operating System Unit 4 – Memory Management: important questions for AKTU
Unit 4 (Memory Management) questions that AKTU repeats most often. This unit carries about 24 marks per paper. Start with the repeated questions, then the most asked topics.
Most repeated Unit 4 questions
- In optimal page replacement algorithm, information about all future page references is available to the OS. A modification: OS correctly predicts only up to next 4 page references. A process accesses pages: 1, 3, 2, 4, 2, 3, 1, 2, 4, 3, 1, 4. If the system has three memory frames that are initially empty, find the number of page faults. (7 marks, 2025, Virtual Memory) – also asked in 2018, 2019, 2022, 2023
- Compare and contrast multiprogramming with fixed partitions and variable partitions? (7 marks, 2024, Basic Memory Management) – also asked in 2018, 2019, 2022
- Explain the principles of paging and segmentation as memory management techniques, comparing their suitability for different system architectures? (7 marks, 2024, Paging and Segmentation) – also asked in 2019, 2022, 2023
Most important Unit 4 topic
- Virtual Memory (Unit 4: Memory Management) – asked 11 times in 2018, 2019, 2022, 2023, 2024, 2025
Most asked Unit 4 topics
- Virtual Memory – asked 11 times
- Basic Memory Management – asked 9 times
- Paging and Segmentation – asked 7 times
More Unit 4 previous year questions
- What is the purpose of a page replacement algorithm? (2 marks, 2025, Virtual Memory)
- Discuss multiprogramming with variable partitions and how it improves memory utilization. (7 marks, 2025, Basic Memory Management)
- Consider a demand paging memory management system with 32-bit logical address, 20-bit physical address, and page size of 2048 bytes. Assuming that the memory is byte addressable, what is the maximum number of entries in the page table? (7 marks, 2025, Virtual Memory)
- Define a resident monitor? (2 marks, 2024, Basic Memory Management)
- Discuss virtual memory concepts, including address translation, page tables, and demand paging mechanisms? (7 marks, 2024, Virtual Memory)
Unit 4 syllabus topics
- Basic Memory Management
- Paging and Segmentation
- Virtual Memory
- Cache Memory