1. What is Kernel mode ? Junior A. a privileged CPU mode in which code may execute any instruction and access all hardware B. an asynchronous signal from hardware that diverts the CPU to a handler routine C. the module that gives CPU control to the process selected by the scheduler D. a kernel keeping only minimal services in the kernel and running the rest as user processes
2. Which term means: "a privileged CPU mode in which code may execute any instruction and access all hardware"? Junior A. Monolithic kernel B. Spooling C. Kernel mode D. Trap
3. Which statement is correct? Junior A. Kernel mode — a restricted CPU mode in which a program cannot run privileged instructions directly B. Kernel mode — a privileged CPU mode in which code may execute any instruction and access all hardware C. Kernel mode — keeping several processes in memory so the CPU always has one ready to run D. Kernel mode — the controlled interface through which a user program requests a service from the kernel
4. What is User mode ? Junior A. the small program that loads the operating system kernel into memory at startup B. a restricted CPU mode in which a program cannot run privileged instructions directly C. the module that gives CPU control to the process selected by the scheduler D. the controlled interface through which a user program requests a service from the kernel
5. Which term means: "a restricted CPU mode in which a program cannot run privileged instructions directly"? Junior A. User mode B. Dispatcher C. Kernel mode D. System call
6. Which statement is correct? Junior A. User mode — a restricted CPU mode in which a program cannot run privileged instructions directly B. User mode — a kernel architecture running all OS services together in a single kernel address space C. User mode — an asynchronous signal from hardware that diverts the CPU to a handler routine D. User mode — keeping several processes in memory so the CPU always has one ready to run
7. What is System call ? Junior A. the controlled interface through which a user program requests a service from the kernel B. an asynchronous signal from hardware that diverts the CPU to a handler routine C. keeping several processes in memory so the CPU always has one ready to run D. the module that gives CPU control to the process selected by the scheduler
8. Which term means: "the controlled interface through which a user program requests a service from the kernel"? Junior A. Monolithic kernel B. Trap C. Kernel mode D. System call
9. Which statement is correct? Junior A. System call — buffering jobs like print tasks on disk so a slow device can process them at its own pace B. System call — the controlled interface through which a user program requests a service from the kernel C. System call — a feature letting devices transfer data to memory without involving the CPU for each byte D. System call — a restricted CPU mode in which a program cannot run privileged instructions directly
10. What is Interrupt ? Mid A. a synchronous software-generated exception caused by an instruction such as a system call or error B. buffering jobs like print tasks on disk so a slow device can process them at its own pace C. keeping several processes in memory so the CPU always has one ready to run D. an asynchronous signal from hardware that diverts the CPU to a handler routine
11. Which term means: "an asynchronous signal from hardware that diverts the CPU to a handler routine"? Mid A. Spooling B. Dispatcher C. Interrupt D. Multiprogramming
12. Which statement is correct? Mid A. Interrupt — an asynchronous signal from hardware that diverts the CPU to a handler routine B. Interrupt — a privileged CPU mode in which code may execute any instruction and access all hardware C. Interrupt — keeping several processes in memory so the CPU always has one ready to run D. Interrupt — a synchronous software-generated exception caused by an instruction such as a system call or error
13. What is Trap ? Mid A. a synchronous software-generated exception caused by an instruction such as a system call or error B. a kernel keeping only minimal services in the kernel and running the rest as user processes C. an asynchronous signal from hardware that diverts the CPU to a handler routine D. a privileged CPU mode in which code may execute any instruction and access all hardware
14. Which term means: "a synchronous software-generated exception caused by an instruction such as a system call or error"? Mid A. Trap B. Bootloader C. Multiprogramming D. Direct Memory Access
15. Which statement is correct? Mid A. Trap — a kernel architecture running all OS services together in a single kernel address space B. Trap — a synchronous software-generated exception caused by an instruction such as a system call or error C. Trap — the small program that loads the operating system kernel into memory at startup D. Trap — the module that gives CPU control to the process selected by the scheduler
16. What is Monolithic kernel ? Mid A. a synchronous software-generated exception caused by an instruction such as a system call or error B. keeping several processes in memory so the CPU always has one ready to run C. a kernel keeping only minimal services in the kernel and running the rest as user processes D. a kernel architecture running all OS services together in a single kernel address space
17. Which term means: "a kernel architecture running all OS services together in a single kernel address space"? Mid A. Interrupt B. Monolithic kernel C. Bootloader D. Spooling
18. Which statement is correct? Mid A. Monolithic kernel — keeping several processes in memory so the CPU always has one ready to run B. Monolithic kernel — the controlled interface through which a user program requests a service from the kernel C. Monolithic kernel — a kernel architecture running all OS services together in a single kernel address space D. Monolithic kernel — a kernel keeping only minimal services in the kernel and running the rest as user processes
19. What is Microkernel ? Mid A. the controlled interface through which a user program requests a service from the kernel B. a kernel keeping only minimal services in the kernel and running the rest as user processes C. a kernel architecture running all OS services together in a single kernel address space D. a feature letting devices transfer data to memory without involving the CPU for each byte
20. Which term means: "a kernel keeping only minimal services in the kernel and running the rest as user processes"? Mid A. Microkernel B. Interrupt C. Dispatcher D. Kernel mode
21. Which statement is correct? Mid A. Microkernel — a restricted CPU mode in which a program cannot run privileged instructions directly B. Microkernel — a kernel architecture running all OS services together in a single kernel address space C. Microkernel — a kernel keeping only minimal services in the kernel and running the rest as user processes D. Microkernel — a privileged CPU mode in which code may execute any instruction and access all hardware
22. What is Bootloader ? Junior A. the small program that loads the operating system kernel into memory at startup B. a kernel keeping only minimal services in the kernel and running the rest as user processes C. a feature letting devices transfer data to memory without involving the CPU for each byte D. a restricted CPU mode in which a program cannot run privileged instructions directly
23. Which term means: "the small program that loads the operating system kernel into memory at startup"? Junior A. Bootloader B. User mode C. Dispatcher D. Trap
24. Which statement is correct? Junior A. Bootloader — the controlled interface through which a user program requests a service from the kernel B. Bootloader — a kernel architecture running all OS services together in a single kernel address space C. Bootloader — a feature letting devices transfer data to memory without involving the CPU for each byte D. Bootloader — the small program that loads the operating system kernel into memory at startup
25. What is Direct Memory Access ? Mid A. buffering jobs like print tasks on disk so a slow device can process them at its own pace B. a kernel architecture running all OS services together in a single kernel address space C. a feature letting devices transfer data to memory without involving the CPU for each byte D. an asynchronous signal from hardware that diverts the CPU to a handler routine
26. Which term means: "a feature letting devices transfer data to memory without involving the CPU for each byte"? Mid A. Dispatcher B. Trap C. Interrupt D. Direct Memory Access
27. Which statement is correct? Mid A. Direct Memory Access — keeping several processes in memory so the CPU always has one ready to run B. Direct Memory Access — the controlled interface through which a user program requests a service from the kernel C. Direct Memory Access — a feature letting devices transfer data to memory without involving the CPU for each byte D. Direct Memory Access — an asynchronous signal from hardware that diverts the CPU to a handler routine
28. What is Spooling ? Mid A. the controlled interface through which a user program requests a service from the kernel B. a feature letting devices transfer data to memory without involving the CPU for each byte C. a kernel architecture running all OS services together in a single kernel address space D. buffering jobs like print tasks on disk so a slow device can process them at its own pace
29. Which term means: "buffering jobs like print tasks on disk so a slow device can process them at its own pace"? Mid A. Spooling B. Interrupt C. User mode D. Monolithic kernel
30. Which statement is correct? Mid A. Spooling — the module that gives CPU control to the process selected by the scheduler B. Spooling — a privileged CPU mode in which code may execute any instruction and access all hardware C. Spooling — buffering jobs like print tasks on disk so a slow device can process them at its own pace D. Spooling — a kernel keeping only minimal services in the kernel and running the rest as user processes Showing 30 of 36 OS · Concepts questions — the full set, with answers, explanations and an AI tutor on every question, is inside.