1
GATE CSE 2004
MCQ (Single Correct Answer)
+2
-0.6
Consider the following set of processes, with the arrival times and the $$CPU$$-burst times given in milliseconds. GATE CSE 2004 Operating Systems - Process Concepts and Cpu Scheduling Question 34 English

What is the average turnaround time for these processes with the preemptive shortest remaining processing time first $$(SRTF)$$ algorithm?

A
$$5.50$$
B
$$5.75$$
C
$$6.00$$
D
$$6.25$$
2
GATE CSE 2004
MCQ (Single Correct Answer)
+1
-0.3
Consider the following statements with respect to user-level threads and kernel-supported threads.
i) Context switch is faster with kernel- supported threads
ii) For user-level threads, a system call can block the entire process
iii) Kernel-supported threads can be scheduled independently
iv) Use-level threads are transparent to the kernel

Which of the above statements are true?

A
(ii), (iii) & (iv) only
B
(ii) & (iii) only
C
(i) & (iii) only
D
(i) & (ii) only
3
GATE CSE 2004
MCQ (Single Correct Answer)
+2
-0.6
Consider the following C program segment:
char p[20];
char *s = "string";
int length = strlen(s);
for(i=0; i < length; i++)
  p[i] = s[length-i];
printf("%s",p);
The output of the program is
A
gnirts
B
string
C
gnirt
D
no output is printed
4
GATE CSE 2004
MCQ (Single Correct Answer)
+1
-0.3
Consider the following C function:
void swap (int a, int b)
{
   int temp;
   temp = a;
   a = b;
   b = temp;
}
In order to exchange the values of two variables x and y.
A
call swap (x, y)
B
call swap (&x, &y)
C
swap (x, y) cannot be used as it does return any value
D
swap (x, y) cannot be used as the parameters are passed by value
EXAM MAP