Computer Organization and Architecture Unit 4 – Memory: important questions for AKTU
Unit 4 (Memory) questions that AKTU repeats most often. This unit carries about 30 marks per paper. Start with the repeated questions, then the most asked topics.
Most repeated Unit 4 questions
- Explain 2D and 2½D memory organization. Write their advantages and disadvantages. (7 marks, 2026, Semiconductor RAM & ROM Memories) – also asked in 2024, 2020, 2021
- Explain the direct mapping technique. Consider a digital computer has a memory unit of 64k*16 and cache memory of 1k words. The cache uses direct mapping with 4 block size of four words. (i) How many bits are there in the tag, block and word fields of the address format? (ii) How many blocks can the cache accommodate? (7 marks, 2024, Cache Memory) – also asked in 2022, 2023, 2026
- Explain the following cache mapping techniques: i. Direct Mapping ii. Associative Mapping iii. Set-Associative Mapping (7 marks, 2026, Cache Memory) – also asked in 2020, 2024
Most important Unit 4 topic
- Memory Concept & Hierarchy (Unit 4: Memory) – asked 11 times in 2020, 2021, 2022, 2023, 2024, 2025, 2026
Most asked Unit 4 topics
- Memory Concept & Hierarchy – asked 11 times
- Cache Memory – asked 10 times
- Semiconductor RAM & ROM Memories – asked 7 times
More Unit 4 previous year questions
- 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, 2026, Memory Concept & Hierarchy)
- Explain the purpose of ROM memories in computer systems? (2 marks, 2025, Memory Concept & Hierarchy)
- Discuss the characteristics and functionalities of auxiliary memories such as magnetic disks, magnetic tapes, and optical disks? (7 marks, 2025, Auxiliary Memory)
- Design and explain the fundamental concept of computer memory hierarchy? (7 marks, 2025, Memory Concept & Hierarchy)
- Describe the architecture and operation of semiconductor RAM (Random Access Memory) memories such as DRAM (Dynamic RAM) and SRAM (Static RAM)? (7 marks, 2025, Semiconductor RAM & ROM Memories)
Unit 4 syllabus topics
- Memory Concept & Hierarchy
- Semiconductor RAM & ROM Memories
- Cache Memory
- Auxiliary Memory
- Virtual Memory