Operating Systems MCQs | STS IBA FPSC BPSC SPSC PPSC Mcqs Test Preparation
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What is the primary purpose of a ‘system call’?
A. Access hardware resources
B. Execute user programs
C. Manage memory
D. Schedule tasks
Answer: Access hardware resources
What is the function of the ‘memory management unit’ (MMU)?
A. Manage the CPU scheduling
B. Handle virtual to physical address translation
C. Control I/O devices
D. Manage file systems
Answer: Handle virtual to physical address translation
What does the ‘inode’ in a file system represent?
A. File content
B. File name
C. File metadata
D. File permissions
Answer: File metadata
Which of the following is a method for deadlock prevention?
A. Resource preemption
B. Resource allocation graph
C. Priority inheritance
D. Wait-Die protocol
Answer: Resource preemption
Which scheduling algorithm may cause the ‘convoy effect’?
A. First-Come, First-Served (FCFS)
B. Round Robin
C. Shortest Job First (SJF)
D. Priority Scheduling
Answer: First-Come, First-Served (FCFS)
What is a ‘page fault’ in virtual memory management?
A. An error when accessing a page from disk
B. A failure in the page replacement algorithm
C. A missing page in physical memory
D. An incorrect page table entry
Answer: A missing page in physical memory
What is the role of the kernel in an operating system?
A. User interface management
B. Resource management
C. File management
D. Networking
Answer: Resource management
What does the term ‘context switch’ refer to?
A. Switching between different programs
B. Switching the execution of processes
C. Changing the priority of a process
D. Switching between different threads
Answer: Switching the execution of processes
Which of the following file systems is commonly used in Linux?
A. NTFS
B. FAT32
C. EXT4
D. HFS+
Answer: EXT4