The width of the physical address on a machine is 40 bits.

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The width of the physical address on a machine is 40 bits. The width of the tag field in a 512 KB 8-way set associative cache is________bits.

1. 21
2. 12
3. 24
4. None of the above

Correct Option: C

Tag bits = 40 – (19 – 3) = 24 bits