QUESTION 9 10. What does the system call fork0 do? O It starts a new program as

Question

QUESTION 9 10. What does the system call fork0 do? O It starts a new program as another process. O It creates an exact copy of the caller process. O It checks if certain resources ("forks") are available. It starts a new program in the existing process. QUESTION 10 10. What happens if three threads wait on the condition x and another thread calls the function x.signal) five times? All three waiting threads resume the execution, but when x.signal) is called for the fourth time, the process crashes O This is not possible: at most one thread can wait on one condition. OAll three waiting threads safely resume the execution. O Only one of the waiting threads resumes the execution, the remaining four calls to x.signal) have no effect.

Explanation / Answer

Question 9
what does the system call fork() do?

Ans) The Answer is it starts a new program as another process.
Explanation:
1. so fork() is the methos that is always used to create a new process, that is the reason first option is correct answer.
2. coming to remaining options they are wrong because it wont create an exact copy of the caller process and also remaining two options are wrong because they are not suitable to the given question.

Question 10)
what happens if three threads wait on the condition x and another thread calls the function x.signal() five times?

Ans) The Answer is All three waiting threads safely resume the execution.
Explanation:
when three threads wait on the condition x and another thread calls the function x.signal() five times then All three waiting threads safely resume the execution is correct and remaining options given are wrong.

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