Operating System
Operating System
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a) interface between the hardware and application programs
b) collection of programs that manages hardware resources
c) system service provider to the application programs
d) all of the mentioned
Answer: D
2. What is the prime function of command interpreter?
a) to give the interface between the API and application program
b) to handle the files in the operating system
c) to get and execute the next user-specified command
d) none of the mentioned
Answer: C
3. In Operating Systems, which of the following is/are CPU scheduling algorithms?
a) Priority
b) Round Robin
c) Shortest Job First
d) All of the mentioned
Answer: D
4. To access the services of the operating system, the interface will be provided by___________
a) Library
b) System calls
c) Assembly instructions
d) API
Answer: B
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5. CPU scheduling will be the basis of ___________
a) multiprogramming operating systems
b) larger memory sized systems
c) multiprocessor systems
d) none of the mentioned
Answer: A
6. Which one of the following cannot be called as true?
a) kernel remains in the memory during the entire computer session
b) kernel is made of various modules which can not be loaded in running operating system
c) kernel is the first part of the operating system to load into memory during booting
d) kernel is the program that constitutes the central core of the operating system
Answer: B
7. Which one of the following errors are going to be handled by operating system?
a) lack of paper in printer
b) connection failure in the network
c) power failure
d) all of the mentioned
Answer: D
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8. Where is the operating system placed in the memory?
a) either low or high memory (depending on the location of interrupt vector)
b) in the low memory
c) in the high memory
d) none of the mentioned
Answer: A
9. If a process fails, most operating system write the error information to a ______
a) new file
b) another running process
c) log file
d) none of the mentioned
Answer: C
10. Which one of the following will not be a real time operating system?
a) RT Linux
b) Palm OS
c) QNX
d) VxWorks
Answer: B
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11. What does OS X has?
a) monolithic kernel with modules
b) microkernel
c) monolithic kernel
d) hybrid kernel
Answer: D
12. In operating system, each process will be own__________
a) open files
b) pending alarms, signals, and signal handlers
c) address space and global variables
d) all of the mentioned
Answer: D
13. In a timeshare operating system, when the time slot assigned to a process is completed, the process switches from the current state to?
a) Suspended state
b) Terminated state
c) Ready state
d) Blocked state
Answer: C
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14. Cascading termination is related to termination of all child processes if the parent process terminates ______
a) Normally or abnormally
b) Abnormally
c) Normally
d) None of the mentioned
Answer: A
15. When a process is in a “Blocked” state waiting for some I/O service. When the service will be completed it goes to the __________
a) Terminated state
b) Suspended state
c) Running state
d) Ready state
Answer: D
16. Transient operating system code is a code which ____________
a) stays in the memory always
b) never enters the memory space
c) comes and goes as needed
d) is not easily accessible
Answer: C
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17. The portion of the process scheduler in an operating system that dispatches processes will be concerned with ____________
a) assigning ready processes to waiting queue
b) assigning running processes to blocked queue
c) assigning ready processes to CPU
d) all of the mentioned
Answer: C
18. The FCFS algorithm will be really troublesome for ____________
a) operating systems
b) multiprocessor systems
c) time sharing systems
d) multiprogramming systems
Answer: D
19. For an effective operating system, when you can check for the deadlock?
a) every time a resource request is made at fixed time intervals
b) at fixed time intervals
c) every time a resource request is made
d) none of the mentioned
Answer: A
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20. A deadlock avoidance algorithm dynamically analyses the__________ to make sure that a circular wait condition will never be
a) operating system
b) resources
c) system storage state
d) resource allocation state
Answer: D
21. Swapping _______ be done when a process has pending I/O, or has to execute I/O operations only into operating system buffers.
a) must never
b) maybe
c) can
d) must
Answer: A
22. The prime memory accommodates ____________
a) cpu
b) user processes
c) operating system
d) all of the mentioned
Answer: C
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23. The operating system is going to be responsible for?
a) bad-block recovery
b) booting from disk
c) disk initialization
d) all of the mentioned
Answer: D
24. The operating system and the other processes are protected from being modified by an already running process because ____________
a) every address generated by the CPU is being checked against the relocation and limit registers
b) they have a protection algorithm
c) they are in different memory spaces
d) they are in different logical addresses
Answer: A
25. Using transient code, _______ the size of the operating system during program execution.
a) maintains
b) changes
c) increases
d) decreases
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26. The operating system will maintain a ______ table that keeps track of how many frames have been allocated, how many are there, and how many will be available.
a) memory
b) mapping
c) page
d) frame
Answer: D
27. To obtain better memory utilization, dynamic loading is utilized. With dynamic loading, a routine is not loaded until it is called. For implementing dynamic loading ____________
a) special support from operating system is essential
b) special support from hardware is required
c) user programs can implement dynamic loading without any special support from hardware or operating system
d) special support from both hardware and operating system is essential
Answer: C
28. The _________ shows a uniform device-access interface to the I/O subsystem, much as system calls give a standard interface between the application and the operating system.
a) Device drivers
b) I/O systems
c) Devices
d) Buses
Answer: A
29. In real time operating system ____________
a) process scheduling can be done only once
b) all processes have the same priority
c) kernel is not required
d) a task must be serviced by its deadline period
Answer: D
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30. Hard real time operating system has ______________ jitter as compared to the soft real time operating system.
a) equal
b) more
c) less
d) none of the mentioned
Answer: C