GATE | CSE 2023 | Question 57

Consider the following two-dimensional array D in the C programming language, which is stored in row-major order:

int D[128][128];

Demand paging is used for allocating memory and each physical page frame holds 512 elements of the array D. The Least Recently Used (LRU) page-replacement policy is used by the operating system. A total of 30 physical page frames are allocated to a process that executes the following code snippet:

for (int i = 0;  i <  128;  i++) 
for (int j = 0; j < 128; j++)
D[j][i] *= 10;

The number of page faults generated during the execution of this code snippet is

(A)

(B)

(C)

(D)