Latest Gate Aptitude Question SOLUTION: An 8KB direct mapped write-back cache is organized as multiple blocks, each of size 32-bytes. The processor generates 32-bit addresses. The cache controller maintains the tag infor

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(#M40029686) GATE question GATE-CS Keep an EYE

An 8KB direct mapped write-back cache is organized as multiple blocks, each of
size 32-bytes. The processor generates 32-bit addresses. The cache controller
maintains the tag information for each cache block comprising of the following.
1 Valid bit
1 Modified bit
As many bits as the minimum needed to identify the memory block mapped in
the cache.
What is the total size of memory needed at the cache controller to store metadata
(tags) for the cache?

option
(A) 4864 bits
(B) 6144 bits
(C) 6656 bits
(D) 5376 bits

Asked In Gate Rats (11 years ago)

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