Operating System MCQs with Answers
Practice important Operating System MCQs with answers and explanations.
Multiple Choice Questions
Q461: What does the mutual exclusion condition ensure in process synchronization?
- A: Only one process can be in its critical section at any time
- B: No process can enter its critical section
- C: All processes enter their critical sections at the same time
- D: All processes execute in parallel
View Answer
A
Q462: What is the bounded waiting condition in process synchronization?
- A: A process is allowed to enter the critical section after a fixed number of processes
- B: A process can enter the critical section any number of times
- C: A process can enter the critical section after waiting indefinitely
- D: A process can enter the critical section within a fixed time bound
View Answer
D
Q463: Which solution to the critical section problem requires atomic operations?
- A: Software-based solutions
- B: Hardware-based solutions
- C: Operating system-based solutions
- D: All of the above
View Answer
B
Q464: In process synchronization, the entry section refers to which of the following?
- A: Code that prepares the process to enter the critical section
- B: Code that executes after the process enters the critical section
- C: Code that exits the critical section
- D: Code that manages the shared resource
View Answer
A
Q465: What happens if the critical section problem is not solved?
- A: Processes may enter their critical sections simultaneously, causing data inconsistency
- B: Processes will be unable to access shared data
- C: The system will become deadlocked
- D: None of the above
View Answer
A
Q466: In the solution to the critical section problem, what happens after a process exits its critical section?
- A: It moves to the remainder section
- B: It is immediately scheduled for the next critical section
- C: It is terminated
- D: It waits for the next available resource
View Answer
A
Q467: The value of 'counter' after the concurrent execution of counter++ and counter-- with initial value 5 can be ____.
- A: 4
- B: 5
- C: 6
- D: 7
View Answer
A
Q468: In process synchronization, the code that prepares a process to enter its critical section is called the ____ section.
- A: Entry
- B: Critical
- C: Exit
- D: Remainder
View Answer
A
Q469: The technique used to ensure that only one process is in its critical section at a time is called ____.
- A: Mutual Exclusion
- B: Synchronization
- C: Deadlock Prevention
- D: Race Condition
View Answer
A
Q470: In Algorithm 1, the shared variable 'turn' is used to determine which process can execute in the ____ section.
- A: Critical
- B: Entry
- C: Exit
- D: Remainder
View Answer
A