Question

Which address is used for a tag?

(a) memory address

(b) logical address

(c) cache address

(d) location address

I had been asked this question in an internship interview.

The doubt is from Size of Cache in portion Memory Systems of Embedded Systems

Answer 1

Right option is (b) logical address

The explanation: The cache memory uses either a physical address or logical address for its tag data. For a logical cache, the tag refers to a logical address and for a physical cache, the tag refers to the physical address.