process synchronization

Question

Which of the following statements is false?
a) Disjoint processes need not use critical section
b) Programs with critical sections can never be use simultaneously by more than one process
c) A process wanting to enter the critical section currently in use must wait for the process utilizing the critical section to terminate
d) Two different critical sections may be executed concurrently if they do not use the same shared variables

Answer 1

Multiple processes can access and execute non-overlapping critical sections simultaneously, as long as they do not use the same shared variables. The purpose of a critical section is to protect shared resources and prevent race conditions between processes, but it does not prevent concurrent execution of critical sections by different processes.

 

So option B.

Answer 2

b

Comments

I was solving Ace Academy material and the answer was given as D, I also suspected that this was a mere printing mistake but thanks for the clarification