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Operating Systems · Quiz 1 · 25 Feb 2024 · January 2024 term

Question 13: Consider the following lines of code. Identify the TRUE …

Question 13

+3 marksOne correct option

Consider the following lines of code. Identify the TRUE statements.

c
int i=0, pid;
pid = fork();
if (pid > 0){
    sleep(1);
    printf("parent : %d\n", i);
    wait();
} else{
    i = i + 1;
    printf("child : %d\n", i);
}

Figure 1:

(i) Output is parent : 0 child : 1
(ii) In the parent process, fork returns child pid, and in the child process, fork returns 0 (iii) wait returns the PID of an exiting parent process
(iv) When fork is called, all pages are easily shared between parent and child by copying the parent’s page tables

  1. A

    (i), (ii), and (iii)

  2. B

    (i), (iii), and (iv)

  3. C

    (i), (ii), and (iv)

  4. D

    (ii), (iii), and (iv)

Show answer

Correct answer

  • C

    (i), (ii), and (iv)

See the whole paperTake it as a mock test

Question 13 of 22 in the IIT Madras BS Operating Systems (Operating Systems) Quiz 1 paper sat on 25 Feb 2024, in the January 2024 term (IIT M DEGREE AN2 EXAM QDB2 25 Feb 2024). It carries 3 marks.

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