Computer Architecture MCQs and Notes

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📊 Computer Architecture
Q. In set associative and associative mapping there exists less flexibility.
  • (A) true
  • (B) false
  • (C) ---
  • (D) ---
💬 Discuss
✅ Correct Answer: (B) false

Explanation: the above two methods of mapping the decision of which block to be removed rests with the cache controller.

📊 Computer Architecture
Q. In associative mapping during LRU, the counter of the new block is set to ‘0’ and all the others are incremented by one when occurs.
  • (A) delay
  • (B) miss
  • (C) hit
  • (D) delayed hit
💬 Discuss
✅ Correct Answer: (B) miss

Explanation: miss usually occurs when the memory block required is not present in the cache.

📊 Computer Architecture
Q. The directly mapped cache no replacement algorithm is required.
  • (A) true
  • (B) false
  • (C) ---
  • (D) ---
💬 Discuss
✅ Correct Answer: (A) true

Explanation: the position of each block is pre-determined in the direct mapped cache, hence no need for replacement.

📊 Computer Architecture
Q. Highly encoded schemes that use compact codes to specify a small number of functions in each micro instruction is
  • (A) horizontal organisation
  • (B) vertical organisation
  • (C) diagonal organisation
  • (D) none of the mentioned
💬 Discuss
✅ Correct Answer: (B) vertical organisation
📊 Computer Architecture
Q. The signals are grouped such that mutually exclusive signals are put together.
  • (A) true
  • (B) false
  • (C) ---
  • (D) ----
💬 Discuss
✅ Correct Answer: (A) true

Explanation: this is done to improve the efficiency of the controller.

📊 Computer Architecture
Q. To increase the speed of memory access in pipelining, we make use of _____
  • (A) Special memory locations
  • (B) Special purpose registers
  • (C) Cache
  • (D) Buffers
💬 Discuss
✅ Correct Answer: (C) Cache
📊 Computer Architecture
Q. The fetch and execution cycles are interleaved with the help of _____
  • (A) Modification in processor architecture
  • (B) Clock
  • (C) Special unit
  • (D) Control unit
💬 Discuss
✅ Correct Answer: (B) Clock
📊 Computer Architecture
Q. _____ has been developed specifically for pipelined systems.
  • (A) Utility software
  • (B) Speed up utilities
  • (C) Optimizing compilers
  • (D) None of the mentioned
💬 Discuss
✅ Correct Answer: (C) Optimizing compilers
📊 Computer Architecture
Q. ______ is used to detect and correct the errors that may occur during data transfers.
  • (A) ecc
  • (B) crc
  • (C) checksum
  • (D) none of the mentioned
💬 Discuss
✅ Correct Answer: (A) ecc

Explanation: ecc stands for error correcting code.

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