1. An operating system is best described as:
A) A hardware component
B) A system software
C) An application software
D) A programming language
B) A system software
2. Which of the following acts as an interface between the user and computer hardware?
A) Compiler
B) Assembler
C) Operating System
D) Loader
C) Operating System
3. Which of the following is NOT a function of an operating system?
A) Process management
B) Memory management
C) File management
D) Word processing
D) Word processing
4. Which type of operating system allows multiple users to access a computer system simultaneously?
A) Single-user OS
B) Batch OS
C) Multi-user OS
D) Embedded OS
C) Multi-user OS
5. Which operating system is designed to respond within a fixed time constraint?
A) Distributed OS
B) Real-time OS
C) Network OS
D) Batch OS
B) Real-time OS
6. The core part of an operating system is called:
A) Shell
B) Kernel
C) File system
D) Loader
B) Kernel
7. Which of the following is an example of a batch operating system?
A) UNIX
B) MS-DOS
C) IBM OS/360
D) Windows 10
C) IBM OS/360
8. Which of the following operating systems is commonly used in embedded systems?
A) Windows
B) Linux
C) RTOS
D) UNIX
C) RTOS
9. The program that initializes the operating system during booting is called:
A) Kernel
B) Boot loader
C) Shell
D) Device driver
B) Boot loader
10. Which of the following is a time-sharing operating system?
A) MS-DOS
B) UNIX
C) Batch OS
D) Embedded OS
B) UNIX
11. Which operating system service allows programs to request services from the kernel?
A) Interrupt
B) System call
C) Context switch
D) Trap
B) System call
12. Which of the following is NOT an operating system?
A) Linux
B) Windows
C) Oracle
D) UNIX
C) Oracle
13. Which OS structure divides the OS into layers?
A) Monolithic
B) Layered approach
C) Microkernel
D) Hybrid
B) Layered approach
14. In which OS structure are most services implemented in user space?
A) Monolithic kernel
B) Layered OS
C) Microkernel
D) Batch OS
C) Microkernel
15. Which of the following is an advantage of microkernel architecture?
A) Faster execution
B) Simpler design
C) Better reliability
D) Less inter-process communication
C) Better reliability
16. Which operating system is open source?
A) Windows
B) Linux
C) macOS
D) DOS
B) Linux
17. Which component of OS handles interaction with users?
A) Kernel
B) Shell
C) Scheduler
D) Memory manager
B) Shell
18. Which OS is suitable for scientific computations requiring high performance?
A) Batch OS
B) Real-time OS
C) Embedded OS
D) Single-user OS
A) Batch OS
19. Which OS supports multiprogramming?
A) Single-user OS
B) Batch OS
C) Modern operating systems
D) Embedded OS
C) Modern operating systems
20. Which of the following is an example of a network operating system?
A) MS-DOS
B) Windows Server
C) RTOS
D) Embedded Linux
B) Windows Server
21. Which OS concept allows more than one program to reside in memory?
A) Multitasking
B) Multiprogramming
C) Multithreading
D) Time-sharing
B) Multiprogramming
22. Which operating system executes jobs without user interaction?
A) Time-sharing OS
B) Batch OS
C) Real-time OS
D) Network OS
B) Batch OS
23. Which of the following is NOT an OS service?
A) Program execution
B) I/O operations
C) Deadlock detection
D) Algorithm design
D) Algorithm design
24. Which OS type is designed mainly for mobile devices?
A) Batch OS
B) Embedded OS
C) Distributed OS
D) Network OS
B) Embedded OS
25. Which of the following best defines an operating system?
A) A set of application programs
B) A resource allocator and control program
C) A hardware abstraction only
D) A programming environment
B) A resource allocator and control program