COA Unit 4 Notes AKTU (BCS302)

AKTU · BTECH · Semester 3 · Computer Organization and Architecture · Unit 4 · Notes

AKTU Computer Organization and Architecture (BCS302) Unit 4 notes for B.Tech Semester 3 – Memory. Topics: Memory Concept & Hierarchy, Semiconductor RAM &…

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Unit 4: Memory – AKTU syllabus topics

  • Memory Concept & Hierarchy
  • Semiconductor RAM & ROM Memories
  • Cache Memory
  • Auxiliary Memory
  • Virtual Memory

Most asked AKTU PYQ questions from Unit 4

  1. Q5b. Explain 2D and 2½D memory organization. Write their advantages and disadvantages. (7 marks, 2025-26)
  2. Q6b. 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… (7 marks, 2023-24)
  3. Q1f. Define 2 ½ D memory organization. (2 marks, 2023-24)
  4. Q2d. Consider a cache consisting of 256 blocks of 16 words each for a total of 4096 words and assume that the main memory is addressable by a 16 bits address and it consists of 4K blocks. How many bits are there in each of TAG, SET, WORD field for 2-way set associative technique? (10 marks, 2022-23)
  5. Q2d. A digital computer has a memory unit of 64K X 16 and a cache memory of 1K words. The cache uses direct mapping with a block size of four words. I. How many bits are there in the tag, index, block, and word fields of the address format? II. How many bits are there in each word of cache, and how… (10 marks, 2021-22)
  6. Q2d. Discuss 2 D RAM and 2.5D RAM with suitable diagram. (10 marks, 2020-21)
  7. Q5a. Explain the following cache mapping techniques: i. Direct Mapping ii. Associative Mapping iii. Set-Associative Mapping (7 marks, 2025-26)
  8. Q1h. What is the difference between 2D and 2^1/2 D memory organization? (2 marks, 2019-20)
  9. Q6a. Discuss the Memory Hierarchy in computer system with regard to Speed, Size and Cost. (10 marks, 2022-23)
  10. Q6b. Write a short notes on magnetic disk, magnetic tape and optical disk. (10 marks, 2022-23)

AKTU paper codes: BCS302, KCS302, BCS302H, KCS302H

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