Gate2020 cs Q40

40A computer system with a word length of 32 bits has a 16 MB byte-addressable main memory and a 64 KB, 4-way set associative cache memory with a block size of 256 bytes. Consider the following four physical addresses represent hexadecimal notation.
A1 = 0×42C8A4, A2 = 0×546888,
A3 = 0×6A289C, A4 = 0×5E4880
Which one of the following is TRUE?

Option : C
Explanation :
Word length = 32 bit, MM size = 16 MB
Physical address = 24 bit, CM size = 64 KB
4-way set associative
Block size = 256 B
Number of lines (N) = 64K/256 = 2¹⁶/2⁸ = 2⁸
Number of sets (S) = N/P-way = 2⁸/4 = 2⁶

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