1
GATE CSE 2022
Numerical
+1
-0.33

Consider a demand paging system with four page frames (initially empty) and LRU page replacement policy. For the following page reference string

7, 2, 7, 3, 2, 5, 3, 4, 6, 7, 7, 1, 5, 6, 1

the page fault rate, defined as the ratio of number of page faults to the number of memory accesses (rounded off to one decimal place) is _____________.

2
GATE CSE 2022
+1
-0.33

What is printed by the following ANSI C program?


#include <stdio.h>
int main(int argc, char *argv[ ]) {
int x = 1, z[2] = {10, 11};
int *p = NULL;
p = &x;
*p = 10;
p = &z[1];
*(&z[0] + 1) += 3;
printf("%d, %d, %d\n", x, z[0], z[1]);
return 0;
}


A
1, 10, 11
B
1, 10, 14
C
10, 14, 11
D
10, 10, 14
3
GATE CSE 2022
+1
-0.33

What is printed by the following ANSI C program?


#include <stdio.h>
int main(int argc, char *argv[ ]) {
int a[3][3][3] = {{1, 2, 3, 4, 5, 6, 7, 8, 9},
{10, 11, 12, 13, 14, 15, 16, 17, 18},
{19, 20, 21, 22, 23, 24, 25, 26, 27}};
int i = 0, j = 0, k = 0;
for(i = 0; i < 3; i++) {
for(k = 0; k < 3; k++)
printf("%d"",a[i][j][k]);
printf("\n");
}
return 0;
}


A
$$\matrix{ 1 & 2 & 3 \cr {10} & {11} & {12} \cr {19} & {20} & {21} \cr }$$
B
$$\matrix{ 1 & 4 & 7 \cr {10} & {13} & {16} \cr {19} & {22} & {25} \cr }$$
C
$$\matrix{ 1 & 2 & 3 \cr 4 & 5 & 6 \cr 7 & 8 & 9 \cr }$$
D
$$\matrix{ 1 & 2 & 3 \cr {13} & {14} & {15} \cr {25} & {26} & {27} \cr }$$
4
GATE CSE 2022
+1
-0.33

What is printed by the following ANSI C program?


#include <stdio.h>
int main(int argc, char *argv[]) {
char a = 'P';
char b = 'x';
char c = (a & b) + '*';
char d = (a | b) $$-$$ '$$-$$';
char e = (a ^ b) + '+';
printf("%c %c %c\n", c, d, e);
return 0;
}



ASCII encoding for relevant characters is given below :

A
z K S
B
122 75 83
C
* $$-$$ +
D
P x +
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