Computer Organization Questions and Answers – Mapping Functions

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

1. The memory blocks are mapped on to the cache with the help of ______
a) Hash functions
b) Vectors
c) Mapping functions
d) None of the mentioned
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2. During a write operation if the required block is not present in the cache then ______ occurs.
a) Write latency
b) Write hit
c) Write delay
d) Write miss
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3. In ________ protocol the information is directly written into the main memory.
a) Write through
b) Write back
c) Write first
d) None of the mentioned
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4. The only draw back of using the early start protocol is _______
a) Time delay
b) Complexity of circuit
c) Latency
d) High miss rate
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5. The method of mapping the consecutive memory blocks to consecutive cache blocks is called ______
a) Set associative
b) Associative
c) Direct
d) Indirect
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6. While using the direct mapping technique, in a 16 bit system the higher order 5 bits are used for ________
a) Tag
b) Block
c) Word
d) Id
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7. In direct mapping the presence of the block in memory is checked with the help of block field.
a) True
b) False
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8. In associative mapping, in a 16 bit system the tag field has ______ bits.
a) 12
b) 8
c) 9
d) 10
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9. The associative mapping is costlier than direct mapping.
a) True
b) False
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10. The technique of searching for a block by going through all the tags is ______
a) Linear search
b) Binary search
c) Associative search
d) None of the mentioned
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11. The set-associative map technique is a combination of the direct and associative technique.
a) True
b) False
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12. In set-associative technique, the blocks are grouped into ______ sets.
a) 4
b) 8
c) 12
d) 6
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13. A control bit called _________ has to be provided to each block in set-associative.
a) Idol bit
b) Valid bit
c) Reference bit
d) All of the mentioned
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14. The bit used to indicate whether the block was recently used or not is _______
a) Idol bit
b) Control bit
c) Reference bit
d) Dirty bit
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15. Data which is not up-to date is called as _______
a) Spoilt data
b) Stale data
c) Dirty data
d) None of the mentioned
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Sanfoundry Global Education & Learning Series – Computer Organisation and Architecture.

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