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What is virtual memory in an operating system? a) A memory management technique that allows the execution of processes larger than physical memory b) A technique for prioritizing processes c) A method for organizing file systems d) A type of hardware used to expand physical memory Answer: a) A memory management technique that allows the […]

What is a system call in an operating system? a) A way for programs to request services from the operating system b) A technique for scheduling CPU processes c) A method for transferring data between devices d) A way to manage virtual memory Answer: a) A way for programs to request services from the operating

What is an interrupt in an operating system? a) A signal sent by hardware or software to indicate an event that requires immediate attention b) A method for prioritizing CPU tasks c) A technique for swapping processes in and out of memory d) A mechanism for handling deadlocks Answer: a) A signal sent by hardware

What is spooling in an operating system? a) A process where data is temporarily held in a buffer until the destination device is ready to handle it b) A method for handling interrupts c) A technique for swapping memory d) A method for scheduling high-priority processes Answer: a) A process where data is temporarily held

What is the function of a device driver in an operating system? a) To act as a translator between hardware devices and the operating system b) To manage the scheduling of processes c) To handle memory allocation d) To control network communications Answer: a) To act as a translator between hardware devices and the operating

What is the Banker’s Algorithm in operating systems? a) A deadlock avoidance algorithm that ensures safe resource allocation b) A method for scheduling CPU processes c) A file system management technique d) A way to manage virtual memory Answer: a) A deadlock avoidance algorithm that ensures safe resource allocation Explanation: The Banker’s Algorithm is a

What is aging in operating systems? a) A technique used to prevent starvation by gradually increasing the priority of waiting processes b) A method for reducing memory fragmentation c) A scheduling algorithm that focuses on process aging d) A way to manage virtual memory Answer: a) A technique used to prevent starvation by gradually increasing

What is starvation in operating systems? a) A situation where low-priority processes wait indefinitely because higher-priority processes continuously take precedence b) A technique for reducing process execution time c) A method for managing memory allocation d) A condition caused by insufficient memory for process execution Answer: a) A situation where low-priority processes wait indefinitely because

What is the main function of the medium-term scheduler in an operating system? a) To swap processes in and out of memory b) To allocate CPU time to processes c) To handle I/O operations d) To manage process creation and termination Answer: a) To swap processes in and out of memory Explanation: The medium-term scheduler

What is a race condition in operating systems? a) A situation where two or more processes attempt to access shared resources simultaneously, leading to unpredictable results b) A method for prioritizing processes c) A technique for optimizing file system performance d) A way to manage memory allocation Answer: a) A situation where two or more

What is process synchronization in operating systems? a) A mechanism to ensure that two or more processes do not execute critical sections simultaneously b) A technique for saving process state information c) A method for scheduling processes based on priority d) A method for preventing process deadlock Answer: a) A mechanism to ensure that two

What is a hard real-time operating system? a) An operating system that guarantees strict deadlines for critical tasks b) An operating system where delays are acceptable c) An operating system that only runs on embedded systems d) An operating system that supports preemptive multitasking Answer: a) An operating system that guarantees strict deadlines for critical

What is a soft real-time operating system? a) An operating system where critical tasks are given priority but delays are acceptable b) An operating system where delays are not allowed for any tasks c) An operating system that manages file systems d) An operating system that does not support real-time tasks Answer: a) An operating

What is the difference between paging and segmentation in memory management? a) Paging divides memory into fixed-size pages, while segmentation divides memory into variable-size segments b) Segmentation divides memory into fixed-size blocks, while paging allocates entire programs c) Paging manages memory for file systems, while segmentation handles CPU processes d) Segmentation is only used in

What is a thread in operating systems? a) The smallest unit of processing that can be scheduled by an operating system b) A type of hardware device c) A method for managing memory d) A method for controlling file system access Answer: a) The smallest unit of processing that can be scheduled by an operating

What is the function of virtual memory in an operating system? a) It allows the system to execute processes that require more memory than is physically available b) It allocates file system permissions c) It manages user access to applications d) It is a technique for scheduling processes Answer: a) It allows the system to

What is the role of a file descriptor in operating systems? a) It is a reference to an open file used by the operating system to access files b) It is a method for encoding file paths c) It is a technique for managing file system permissions d) It is a type of file compression

What is the function of a bootloader in an operating system? a) To load the operating system kernel into memory during the boot process b) To manage memory allocation for processes c) To schedule tasks for the CPU d) To provide an interface for users to interact with applications Answer: a) To load the operating

What is the main function of a microkernel in operating systems? a) To perform minimal tasks such as communication and I/O, leaving other services to user space b) To manage all system resources directly c) To control the entire file system d) To allocate memory for all processes Answer: a) To perform minimal tasks such

What is time-sharing in an operating system? a) A technique where multiple users can access the system simultaneously by sharing CPU time b) A method for scheduling background processes c) A type of file system management d) A process used for swapping memory Answer: a) A technique where multiple users can access the system simultaneously

What is the difference between a process and a thread in operating systems? a) A process is an independent program in execution, while a thread is a lightweight process that shares resources with other threads b) A thread is more memory-intensive than a process c) Threads cannot communicate with each other, while processes can d)

What is demand paging in an operating system? a) A method where pages are loaded into memory only when they are needed b) A scheduling algorithm used to prioritize processes c) A technique for allocating file system resources d) A way to allocate CPU time to real-time processes Answer: a) A method where pages are

What is thrashing in an operating system? a) A condition where excessive paging activity severely degrades system performance b) A technique for managing file system errors c) A method for optimizing CPU scheduling d) A process for recovering memory leaks Answer: a) A condition where excessive paging activity severely degrades system performance Explanation: Thrashing occurs

What is the difference between preemptive and non-preemptive scheduling? a) Preemptive scheduling allows the OS to take control of the CPU from a running process, while non-preemptive scheduling does not b) Non-preemptive scheduling is faster than preemptive scheduling c) Preemptive scheduling only works in single-tasking systems d) Non-preemptive scheduling only works for real-time processes Answer:

What is a semaphore in operating systems? a) A variable used to control access to shared resources b) A type of memory manager c) A scheduling algorithm for CPU processes d) A method of accessing file systems Answer: a) A variable used to control access to shared resources Explanation: A semaphore is a synchronization primitive