Mapping Functions MCQ’s

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

1. 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

2. 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

3. 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

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

5. 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

6. In associative mapping, in a 16 bit system the tag field has ______ bits.
a) 12
b) 8
c) 9
d) 10

7. The method of mapping the consecutive memory blocks to consecutive cache blocks is called ______
a) Set associative
b) Associative
c) Direct
d) Indirect

8. In direct mapping the presence of the block in memory is checked with the help of block field.
a) True
b) False

9. The associative mapping is costlier than direct mapping.
a) True
b) False

10. The set-associative map technique is a combination of the direct and associative technique.
a) True
b) False

11. 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

12. 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

13. In set-associative technique, the blocks are grouped into ______ sets.
a) 4
b) 8
c) 12
d) 6

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

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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