A computer system has a level-1 instruction cache (1-cache), a level-1 data…

GATE · 2006 · IT

A computer system has a level-1 instruction cache (1-cache), a level-1 data cache (D-cache) and a level-2 cache (L2-cache) with the following specifications:

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The length of the physical address of a word in the main memory is 30 bits. The capacity of the tag memory in the I-cache, D-cache and L2-cache is, respectively,

  1. A.

    1 K x 18-bit, 1 K x 19-bit, 4 K x 16-bit

  2. B.

    1 K x 16-bit, 1 K x 19-bit, 4 K x 18-bit

  3. C.

    1 K x 16-bit, 512 x 18-bit, 1 K x 16-bit

  4. D.

    1 K x 18-bit, 512 x 18-bit, 1 K x 18-bit

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