Practice Cache Memory (4.3.3) - Direct-mapped Caches: Misses, Writes and Performance

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10 questions

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6 sample questions

Question 1.
What is the primary function of cache memory?
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Think about how data is accessed.
Question 2.
Define cache hit.
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What happens when the CPU finds data in the cache?
3Question 3.
What is cache memory primarily used for?
- Storing permanent data
- Speeding up data access
- Processing algorithms
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Think about why we want faster access.
4Question 4.
True or False: A cache miss means that the data is found in cache.
- True
- False
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What's the opposite of a cache hit?
Question 5.
Consider a system where the cache hit ratio is only 50%. Calculate the expected number of memory accesses if the CPU needs to retrieve 100 data items.
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Break down the 100 accesses into hits and misses based on the hit ratio.
Question 6.
Explain how increasing the size of the cache might affect the miss ratio and give an example.
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Think about how storage capacity can change access efficiency.

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