Operating Systems MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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What does ‘multiprogramming’ refer to in operating systems?
A. Executing multiple processes simultaneously
B. Dividing memory into segments
C. Switching between multiple threads
D. Managing multiple user accounts
Answer: Executing multiple processes simultaneously
What is the ‘Lru’ algorithm used for?
A. Page replacement
B. Process scheduling
C. File system management
D. Deadlock prevention
Answer: Page replacement
Which of the following is a primary function of the ‘device driver’?
A. Manage hardware devices
B. Handle file system operations
C. Control network connections
D. Allocate memory resources
Answer: Manage hardware devices
Which of the following algorithms is used to solve the ‘producer-consumer problem’?
A. Semaphore-based solution
B. Page replacement algorithm
C. Priority scheduling
D. Deadlock avoidance algorithm
Answer: Semaphore-based solution
What is ‘deadlock’ in an operating system?
A. A situation where processes are stuck in a circular wait
B. A failure in the file system
C. An error in CPU scheduling
D. A malfunction in memory allocation
Answer: A situation where processes are stuck in a circular wait
What is the purpose of the ‘watchdog timer’ in an embedded operating system?
A. Monitor system performance
B. Detect and recover from system failures
C. Manage memory usage
D. Schedule tasks
Answer: Detect and recover from system failures
Which of the following is a technique used for process synchronization?
A. Mutex
B. Disk scheduling
C. Memory paging
D. File system mounting
Answer: Mutex
In the context of memory management, what is ‘fragmentation’?
A. Unused memory blocks causing inefficient allocation
B. Excessive page faults
C. Inefficient cache utilization
D. Data corruption in memory
Answer: Unused memory blocks causing inefficient allocation
Which of the following is a non-preemptive scheduling algorithm?
A. Round Robin
B. Shortest Job First
C. Priority Scheduling
D. First-Come, First-Served
Answer: First-Come, First-Served