Computer Organization Questions and Answers – Performance of Caches

This set of Computer Organization and Architecture Multiple Choice Questions & Answers (MCQs) focuses on “Performance of Caches”.

1. The key factor/s in commercial success of a computer is/are ________
a) Performance
b) Cost
c) Speed
d) Both Performance and Cost
View Answer

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

2. The main objective of the computer system is ________
a) To provide optimal power operation
b) To provide the best performance at low cost
c) To provide speedy operation at low power consumption
d) All of the mentioned
View Answer

Answer: b
Explanation: An optimal system provides the best performance at low costs.

3. A common measure of performance is ________
a) Price/performance ratio
b) Performance/price ratio
c) Operation/price ratio
d) None of the mentioned
View Answer

Answer: a
Explanation: If this measure is less than one then the system is optimal.
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4. 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
View Answer

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

5. 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
View Answer

Answer: d
Explanation: By using the memory Hierarchy, we can increase the performance of the system.

6. The memory transfers between two variable speed devices are always done at the speed of the faster device.
a) True
b) False
View Answer

Answer: a
Explanation: None.

7. An effective to introduce parallelism in memory access is by _______
a) Memory interleaving
b) TLB
c) Pages
d) Frames
View Answer

Answer: a
Explanation: Interleaving divides the memory into modules.
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8. The performance of the system is greatly influenced by increasing the level 1 cache.
a) True
b) False
View Answer

Answer: a
Explanation: This is so because the L1 cache is onboard the processor.

9. Two processors A and B have clock frequencies of 700 Mhz and 900 Mhz respectively. Suppose A can execute an instruction with an average of 3 steps and B can execute with an average of 5 steps. For the execution of the same instruction which processor is faster.
a) A
b) B
c) Both take the same time
d) Insufficient information
View Answer

Answer: a
Explanation: None.
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10. If the instruction Add R1, R2, R3 is executed in a system which is pipelined, then the value of S is (Where S is a term of the Basic performance equation).
a) 3
b) ~2
c) ~1
d) 6
View Answer

Answer: c
Explanation: Pipelining is a process of fetching an instruction during the execution of other instruction.

Sanfoundry Global Education & Learning Series – Computer Organisation and Architecture.

If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]

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Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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