NSCT – Operating System Structures MCQs 20 min Score: 0 Attempted: 0/20 Subscribe 1. . Operating System structure refers to: (A) Hardware design (B) Application software (C) Organization of OS components (D) Network configurationShow All Answers 2. . Which OS structure contains all services in a single large kernel? (A) Microkernel structure (B) Monolithic structure (C) Layered structure (D) Modular structure 3. . In a layered operating system, each layer: (A) Uses services of the lower layer (B) Works independently without interaction (C) Communicates only with hardware (D) Does not interact with other layers 4. . The lowest layer in the layered OS structure is: (A) Application (B) Kernel (C) Hardware (D) User interface 5. . The highest layer in the layered OS structure is: (A) Hardware (B) Device drivers (C) User applications (D) Kernel 6. . The central part of the operating system is called: (A) Shell (B) Assembler (C) Loader (D) Kernel 7. . Which OS structure separates basic OS functions into small services? (A) Microkernel structure (B) Monolithic structure (C) Batch structure (D) Single-user structure 8. . The main advantage of the microkernel structure is: (A) Faster execution (B) Better security and reliability (C) Less programming (D) Less memory 9. . Which OS structure is easier to implement but harder to maintain? (A) Microkernel structure (B) Monolithic structure (C) Layered structure (D) Virtual machine structure 10. . In a microkernel architecture, services like file systems and drivers run in: (A) Kernel space (B) User space (C) Hardware layer (D) BIOS 11. . Which OS structure improves maintainability and debugging? (A) Monolithic structure (B) Layered structure (C) Batch structure (D) CLI structure 12. . A disadvantage of layered OS structure is: (A) Slower performance due to multiple layers (B) Hard to understand (C) No hardware support (D) Difficult to implement 13. . The software that manages virtual machines is called: (A) Hypervisor (B) Compiler (C) Loader (D) Assembler 14. . A virtual machine allows: (A) Only one OS to run (B) Only storage devices (C) Only gaming software (D) Multiple operating systems on the same hardware 15. . Which OS structure allows adding or removing components easily? (A) Single-layer structure (B) Monolithic structure (C) Batch structure (D) Modular structure 16. . Which operating system structure is commonly used in modern systems? (A) Pure monolithic structure (B) Hybrid structure (C) Single-layer structure (D) Batch structure 17. . Device drivers in an OS are used to: (A) Run applications (B) Control hardware devices (C) Manage files (D) Create software 18. . The shell of an operating system acts as: (A) Hardware controller (B) Interface between user and kernel (C) CPU manager (D) Memory controller 19. . Which structure improves flexibility by separating services? (A) Monolithic structure (B) Microkernel structure (C) Batch structure (D) Single-user structure 20. . The purpose of OS structure design is to: (A) Make hardware faster (B) Increase monitor size (C) Organize OS components efficiently (D) Reduce software programs
