1. What is an operating system?
Answer:
The correct option is D.
Note
Description:
An Operating System acts as an intermediary between user/user applications/application programs and hardware. It is a program that manages hardware resources. It provides services to application programs.
2. To access the services of the operating system, the interface is provided by the ___________
Answer:
The correct option is B.
Note
Description:
To access services of the Operating System an interface is provided by the System Calls. Generally, these are functions written in C and C++. Open, Close, Read, Write are some of most prominently used system calls.
3. Operating system is resident in memory of which part?
Answer:
The correct option is C.
Note
Description:
4. Two basic types of operating systems are
Answer:
The correct option is A.
Note
Description:
5. The _______ program initializes all aspects of the system, from CPU registers to device controllers and the contents of main memory, and then starts the operating system.
Answer:
The correct option is B.
Note
Description:
6. To recover from failures in the network operations _____________ information may be maintained.
Answer:
The correct option is D.
Note
Description:
7. The operating system keeps a small table containing information about all open files called ____________
Answer:
The correct option is C.
Note
Description:
8. For real time operating systems, interrupt latency should be ____________
Answer:
The correct option is B.
Note
Description:
Interrupt latency is the time duration between the generation of interrupt and execution of its service
9. The operating system is responsible for?
Answer:
The correct option is D.
Note
Description:
10. Context switching is part of
Answer:
The correct option is B.
Note
Description:
11. Which of the following software is used to simplify using of system software?
Answer:
The correct option is C.
Note
Description:
12. FIFO scheduling is
Answer:
The correct option is D.
Note
Description: Non-preemptive scheduling
13. Which of the following is not an operating system?
Answer:
The correct option is D.
Note
Description: PASCAL
14. In a timeshare operating system, when the time slot assigned to a process is completed, the process switches from the current state to?
Answer:
The correct option is A.
Note
Description: In a time-sharing operating system, when the time slot given to a process is completed, the process goes from the running state to the Ready State. In a time-sharing operating system, unit time is defined for sharing CPU, it is called a time quantum or time slice. If a process takes less than 1 time quantum, then the process itself releases the CPU.
15. Which one of the following errors will be handle by the operating system?
Answer:
The correct option is D.
Note
Description: All the mentioned errors are handled by OS. The OS is continuously monitoring all of its resources. Also, the OS is constantly detecting and correcting errors.
16. What is the main function of the command interpreter?
Answer:
The correct option is C.
Note
Description: The main function of a command interpreter is to get and execute the next user-specified command. Command Interpreter checks for valid command and then runs that command else it will throw an error.
17. Which of the following Is not a part of the operating system?
Answer:
The correct option is C.
Note
Description: Performance monitor
18. Operating system is a collection of
Answer:
The correct option is B.
Note
Description: Software routines
19. Card reader is an example of
Answer:
The correct option is C.
Note
Description: Batch operating system
20. Two operating modes of AT are
Answer:
The correct option is D.
Note
Description: Real mode, protected mode