Real-Time Operating Systems (RTOS) MCQs December 22, 2025August 9, 2024 by u930973931_answers 20 min Score: 0 Attempted: 0/20 Subscribe 1. What is a Real-Time Operating System (RTOS)? (A) An OS for multimedia applications (B) An OS designed for gaming (C) An OS that handles large-scale data processing (D) An OS that handles real-time applications 2. Which of the following is a key characteristic of a real-time operating system? (A) Large memory capacity (B) High processing power (C) Predictable response times (D) High-level programming language support 3. What is the primary purpose of a task scheduler in an RTOS? (A) To manage file systems (B) To handle network communications (C) To manage and allocate CPU time to tasks (D) To provide graphical user interfaces 4. Which scheduling algorithm is commonly used in real-time operating systems? (A) Round-Robin (B) Rate Monotonic Scheduling (C) First-Come-First-Served (D) Shortest Job First 5. What is the main difference between hard real-time and soft real-time systems? (A) Hard real-time systems have strict timing constraints, while soft real-time systems have more flexible constraints (B) Soft real-time systems are used in embedded systems, while hard real-time systems are used in desktop computers (C) Hard real-time systems support multiple tasks, while soft real-time systems do not (D) Soft real-time systems have higher priority than hard real-time systems 6. Which of the following is a feature of an RTOS? (A) High-level graphical interface (B) Multi-user support (C) Multi-threading (D) Extensive file management 7. What is a “task” in the context of an RTOS? (A) A basic unit of work that the OS manages (B) A process that handles network communication (C) A system service that manages hardware (D) A high-level application component 8. Which RTOS feature ensures that high-priority tasks are not blocked by lower-priority tasks? (A) Priority Inversion (B) Memory Protection (C) Multitasking (D) Task Preemption 9. What does the term “context switch” refer to in an RTOS? (A) Switching between different types of user interfaces (B) Switching between tasks and saving their states (C) Switching between different hardware components (D) Switching between different programming languages 10. What is the purpose of “inter-process communication” (IPC) in an RTOS? (A) To execute external programs (B) To manage file storage (C) To handle network connections (D) To allow tasks to communicate and synchronize with each other 11. Which RTOS scheduling algorithm is designed to handle periodic tasks? (A) Round-Robin Scheduling (B) First-Come-First-Served (C) Rate Monotonic Scheduling (D) Shortest Job First 12. What does “priority inversion” mean in an RTOS? (A) A technique for scheduling tasks in reverse order (B) A method for increasing task priorities (C) A situation where a lower-priority task blocks a higher-priority task (D) A feature for inverting task priorities dynamically 13. In an RTOS, what is “deadlock”? (A) A feature that prevents task execution (B) A situation where tasks are stuck waiting for each other to release resources (C) A technique for reducing task priority (D) A method for increasing task efficiency 14. Which RTOS feature helps to avoid task starvation? (A) Time Slicing (B) Task Preemption (C) Context Switching (D) Priority Inheritance 15. What does “task synchronization” involve in an RTOS? (A) Ensuring tasks operate in a coordinated manner without conflicts (B) Synchronizing hardware components (C) Managing network protocols (D) Handling graphical user interfaces 16. Which RTOS feature allows multiple tasks to execute simultaneously? (A) Multitasking (B) File Management (C) Memory Protection (D) System Calls 17. What is “task priority” in the context of an RTOS? (A) The number of resources assigned to a task (B) The memory allocated to a task (C) The time slice given to a task (D) The importance level assigned to a task that determines its execution order 18. Which of the following is NOT a common RTOS? (A) FreeRTOS (B) VxWorks (C) QNX (D) Windows 10 19. What does “time slicing” mean in an RTOS? (A) Slicing data for processing (B) Cutting tasks into smaller segments for easier management (C) Allocating memory in slices for different tasks (D) Dividing CPU time into small intervals for task execution 20. In RTOS, what is a “semaphore”? (A) A tool for managing memory allocation (B) A synchronization tool used to manage access to shared resources (C) A communication protocol (D) A hardware component