Practice Address Mapping (4.5.4) - Direct-mapped Caches: Misses, Writes and Performance

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11 questions

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6 sample questions

Question 1.
What is a cache hit?
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Think about what happens when data retrieval is fast.
Question 2.
What does locality of reference refer to?
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Consider instances where you repeat tasks in programming.
3Question 3.
What occurs when a requested data word is not found in cache?
- True
- False
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Think about the consequences of a failed search.
4Question 4.
A cache miss results in increased performance because data comes quickly from main memory.
- True
- False
- Depends on the memory type
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Recall what we discussed about hits and misses.
Question 5.
Given an address with an 8-bit main memory, how many cache lines are required for a direct-mapped cache with 16 lines?
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Use the direct mapping logic to determine which parts of the address get used.
Question 6.
How would performance change if we had more cache lines but kept the same block sizes?
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Think about how data retrieval improves with more available space.

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