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In which writing scheme does the cache is not updated?(a) write-through(b) write-back(c) write buffering(d) no caching of writing cycleI have been asked this question in an interview for internship.My enquiry is from Writing Scheme of Cache Memory in division Memory Systems of Embedded Systems

Answer»

The correct choice is (d) no CACHING of WRITING cycle

For explanation: The no caching write cycle does not update the cache but the DATA is written to the cache. If the previous data had cached, that ENTRY is invalid and will not use. This makes the processor fetch data DIRECTLY from the main memory.



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