All mock tests are FREE till 31 December — register to save your progress

Given 4 GB (≈ 4.3 × 10⁹ bytes) of virtual space, a typical page size of 4 KB and a page-table entry of 5 bytes, how many virtual pages would this imply, and what is the size of the whole page table?

Pick an option to check yourself, or open the answer below.

Show answer & explanation

Correct answer: A. 1075000 and 5375 KB

Explanation

Pages ≈ 4.3 × 10⁹ / 4 × 10³ ≈ 1,075,000. Page table ≈ 1,075,000 × 5 bytes ≈ 5,375,000 bytes ≈ 5375 KB.

More System Software and Operating System questions