Computer System Architecture - Memory Hierarchy
51. The principle of locality justifies the use of
- Option : D
- Explanation : Cache memory is placed between main memory and CPU.
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- Option : B
- Explanation : A disk driver is software which enables
communication between internal hard disk (or
drive) and computer.
It allows a specific disk drive to interact with the remainder of the computer.
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53. Which of the following requires a device driver?
- Option : D
- Explanation : Exploit the spatial locality of reference in a program as, if the next locality is addressed immediately, it will already be in the cache.
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54. More than one word are put in one cache block to
- Option : B
- Explanation : Statement I is not necessary because at the
same point of time, data need not to be exactly
same. Therefore, write back policy can also be
used.
Statement I I i s not necessary when when discussing only about L1 and L2.
Statement I I I i s not necessary because associativity can be equal.
Statement IV is necessary, The L2 cache must be at least as large as the L1 cache.
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- Option : A
- Explanation : Number of sets in cache = v. So, main memory block j will be mapped to set (j mod v), which will be any one of the cache lines from (j mod v) * k to (j mod v) * k + (k – 1).
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