Computer Architecture MCQs and Notes

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📊 Computer Architecture
Q. An effective to introduce parallelism in memory access is by
  • (A) memory interleaving
  • (B) tlb
  • (C) pages
  • (D) frames
💬 Discuss
✅ Correct Answer: (A) memory interleaving

Explanation: interleaving divides the memory into modules.

📊 Computer Architecture
Q. The memory transfers between two variable speed devices are always done at the speed of the faster device.
  • (A) true
  • (B) false
  • (C) ---
  • (D) ---
💬 Discuss
✅ Correct Answer: (A) true
📊 Computer Architecture
Q. The main purpose of having memory hierarchy is to
  • (A) reduce access time
  • (B) provide large capacity
  • (C) reduce propagation time
  • (D) reduce access time & provide large capacity
💬 Discuss
✅ Correct Answer: (D) reduce access time & provide large capacity

Explanation: by using the memory hierarchy, we can increase the performance of the system.

📊 Computer Architecture
Q. The performance depends on
  • (A) the speed of execution only
  • (B) the speed of fetch and execution
  • (C) the speed of fetch only
  • (D) the hardware of the system only
💬 Discuss
✅ Correct Answer: (B) the speed of fetch and execution

Explanation: the performance of a system is decided by how quick an instruction is brought into the system and executed.

📊 Computer Architecture
Q. A common measure of performance is
  • (A) price/performance ratio
  • (B) performance/price ratio
  • (C) operation/price ratio
  • (D) none of the mentioned
💬 Discuss
✅ Correct Answer: (A) price/performance ratio

Explanation: if this measure is less than one then the system is optimal.

📊 Computer Architecture
Q. The key factor/s in commercial success of a computer is/are
  • (A) performance
  • (B) cost
  • (C) speed
  • (D) both performance and cost
💬 Discuss
✅ Correct Answer: (D) both performance and cost

Explanation: the performance and cost of the computer system is a key decider in the commercial success of the system.

📊 Computer Architecture
Q. The counter that keeps track of how many times a block is most likely used is
  • (A) count
  • (B) reference counter
  • (C) use counter
  • (D) probable counter
💬 Discuss
✅ Correct Answer: (B) reference counter
📊 Computer Architecture
Q. The algorithm which removes the recently used page first is
  • (A) lru
  • (B) mru
  • (C) ofm
  • (D) none of the mentioned
💬 Discuss
✅ Correct Answer: (B) mru

Explanation: in mru it is assumed that the page accessed now is less likely to be accessed again.

📊 Computer Architecture
Q. The algorithm which replaces the block which has not been referenced for a while is called
  • (A) lru
  • (B) orf
  • (C) direct
  • (D) both lru and orf
💬 Discuss
✅ Correct Answer: (A) lru

Explanation: lru stands for least recently used first.

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