What is the output of this program?    int main() {        pid_t child;        child = fork();        printf(“%d\n”,child);        return 0; }

Which scheduling algorithm allocates the CPU first to the process that requests the CPU first?

With _____________ only one process can execute at a time; meanwhile all other process are waiting for the processor. With ______________ more than one process can be running simultaneously each on a different processor.

Semaphore is a/an _______ to solve the critical section problem.

The given DFA corresponds to which of the following Regular expressions?

The interval from the time of submission of a process to the time of completion is termed as ____________

Which of the following is a stage of compiler design?

Which of the following do we use to form an NFA from a regular expression?

Count the number of tokens for the given code snippet: int main(){int a = 10, b = 20;printf(“sum is:%d”,a+b);return 0;}

The number of tokens in the following C statement is                                    printf(“HELLO WORLD”);