GATE - 2001 | OS | Consider a machine with 64 MB physical memory and a 32-bit virtual
Posted on 25-02-2022
GATE - 2001 [Operating System]
Questions:
Consider a machine with 64 MB physical memory and a 32-bit virtual address space. If the page size is 4 KB, what is the approximate size of the page table?
|
A |
16 MB |
|
B |
8 MB |
|
C |
2 MB |
|
D |
24 MB |
Solution:
Option (C) is Correct.
No. of entries in pge table = 232/ 212 = 220
Frame size = 226 / 212 = 214
PT have to be stored in one frame so entry size must be 2 bytes, hence size of PT = 220 * 2 = 2 MB