Writing Scheme of Cache Memory MCQ’s

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This set of Embedded System Multiple Choice Questions & Answers (MCQs) focuses on “Writing Scheme of Cache Memory”.

1. In which scheme does the data write via a buffer to the main memory?
a) write buffer
b) write-back
c) write-through
d) no caching of the write cycle

2. Which of the following is the biggest challenge in the cache memory design?
a) delay
b) size
c) coherency
d) memory access

3. In which writing scheme does all the data writes go through to main memory and update the system and cache?
a) write-through
b) write-back
c) write buffering
d) no caching of writing cycle

4. What leads to the development of MESI and MEI protocol?
a) cache size
b) cache coherency
c) bus snooping
d) number of caches

5. Which protocol does MPC601 use?
a) MESI protocol
b) MEI protocol
c) MOSI protocol
d) MESIF protocol

6. Which writing mechanism forms the backbone of the bus snooping mechanism?
a) write-back
b) write-through
c) no caching of write cycles
d) write buffer

7. What arises when a copy of data is held both in the cache and in the main memory?
a) stall data
b) stale data
c) stop data
d) wait for the state

8. What is the main idea of the writing scheme in the cache memory?
a) debugging
b) accessing data
c) bus snooping
d) write-allocate

9. Which of the following is also known as Illinois protocol?
a) MESI protocol
b) MEI protocol
c) Bus snooping
d) Modified exclusive invalid

10. In which writing scheme does the cache is updated but the main memory is not updated?
a) write-through
b) write-back
c) no caching of writing cycle
d) write buffering

11. Which of the following uses a bus snooping mechanism?
a) MC88100
b) 8086
c) 8051
d) 80286

12. What does MESI stand for?
a) modified exclusive stale invalid
b) modified exclusive shared invalid
c) modified exclusive system input
d) modifies embedded shared invalid

13. Which of the following can allocate entries in the cache for any data that is written out?
a) write-allocate cache
b) read-allocate cache
c) memory-allocate cache
d) write cache

14. What does MEI stand for?
a) modified embedded invalid
b) modified embedded input
c) modified exclusive invalid
d) modified exclusive input

15. In which writing scheme does the cache is not updated?
a) write-through
b) write-back
c) write buffering
d) no caching of writing cycle

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