Computer Operating System Mcqs 21- Operating system manages memory by: A. Allocating memory to processesB. Printing documentsC. Storing files permanentlyD. Only running applications View Answer Answer : A. Allocating memory to processes Description 22- Virtual memory allows: A. Input and output onlyB. Real-time processingC. Storing data permanentlyD. Using more memory than physically available View Answer Answer : D. Using more memory than physically available Description 23- File management in an operating system includes: A. Only printing filesB. Creating, reading, writing, and deleting filesC. Only connecting to networksD. Only running programs View Answer Answer : B. Creating, reading, writing, and deleting files Description 24- Device management includes: A. Running applicationsB. Connecting networksC. Managing memoryD. Controlling input/output devices View Answer Answer : D. Controlling input/output devices Description 25- User interface types include: A. Command-line interfaceB. Graphical user interfaceC. Menu-driven interfaceD. All of the above View Answer Answer : D. All of the above Description 26- A command-line interface is useful because: A. It requires less memory and is fasterB. It is easier for beginnersC. It only works on mobile devicesD. It provides graphical icons View Answer Answer : A. It requires less memory and is faster Description 27- Single-user operating systems allow: A. Multiple users at the same timeB. Only one user at a timeC. Only batch processingD. Real-time execution View Answer Answer : B. Only one user at a time Description 28- Distributed operating system manages: A. Only filesB. Only memoryC. Single computer onlyD. A group of independent computers as a single system View Answer Answer : D. A group of independent computers as a single system Description 29- Examples of real-time operating systems are: A. Windows 10B. RTOS in robotics and medical devicesC. macOSD. Linux only View Answer Answer : B. RTOS in robotics and medical devices Description 30- Operating system updates are important because: A. They delete filesB. They only connect networksC. They improve security and add featuresD. They change hardware View Answer Answer : C. They improve security and add features Description 31- Scheduling in operating systems means: A. Connecting devicesB. Printing filesC. Allocating CPU time to processesD. Managing storage only View Answer Answer : C. Allocating CPU time to processes Description 32- A device driver is: A. Input deviceB. A type of storageC. Software that allows the operating system to communicate with hardwareD. Hardware component View Answer Answer : C. Software that allows the operating system to communicate with hardware Description 33- Operating system security functions include: A. Displaying outputB. Running applications onlyC. Printing documents onlyD. User authentication and access control View Answer Answer : D. User authentication and access control Description 34- Operating system resource management includes: A. Memory, processor, storage, and devicesB. Only input devicesC. Only networkD. Only output devices View Answer Answer : A. Memory, processor, storage, and devices Description 35- Multitasking operating systems use: A. No memoryB. Only input devicesC. Only one CPUD. CPU scheduling to run multiple tasks View Answer Answer : D. CPU scheduling to run multiple tasks Description 36- Multithreading increases efficiency by: A. Running multiple processorsB. Allowing multiple threads within a single program to run concurrentlyC. Displaying graphicsD. Managing storage only View Answer Answer : B. Allowing multiple threads within a single program to run concurrently Description 37- Mobile operating systems are optimized for: A. Portability and touch inputB. Large screen computersC. Heavy scientific computationsD. Only network operations View Answer Answer : A. Portability and touch input Description 38- File systems in an operating system: A. Portability and touch inputB. Control devicesC. Manage memory onlyD. Organize, store, and retrieve files View Answer Answer : D. Organize, store, and retrieve files Description 39- Graphical user interface is easier for beginners because: A. It is slowerB. It requires more memoryC. It uses icons, menus, and windowsD. It uses text commands only View Answer Answer : C. It uses icons, menus, and windows Description 40- Batch operating systems are mostly used in: A. Large organizations for processing multiple jobsB. Personal computersC. Mobile devicesD. Real-time embedded systems View Answer Answer : A. Large organizations for processing multiple jobs Description 1 2 3 4 5 6 7
