Operating System Practice Test 6

Question 1 of 20

1. Segment replacement algorithms are more complex than page replacement algorithms because ____________

Pages are better than segments

Segments have fixed sizes

Segments have variable sizes

Segments are better than pages

Question 1 of 20

Question 2 of 20

2. A heavy weight process ___________

can have multiple or a single thread for execution

has a single thread of execution

has multiple threads of execution

none of the mentioned

Question 2 of 20

Question 3 of 20

3. The One to One model allows ___________

increased or decreased concurrency

decreased concurrency

concurrency equivalent to other models

increased concurrency

Question 3 of 20

Question 4 of 20

4. The valid - invalid bit, in this case, when valid indicates?

the page is illegal

the page is not in memory

the page is not legal

the page is in memory

Question 4 of 20

Question 5 of 20

5. If the thread pool contains no available thread ____________

the server goes to another thread pool

the server demands for a new pool creation

the server runs a new process

the server waits until one becomes free

Question 5 of 20

Question 6 of 20

6. A swap space can reside in ___________

RAM

Separate disk partition

Cache

None of the mentioned

Question 6 of 20

Question 7 of 20

7. _____ is the concept in which a process is copied into the main memory from the secondary memory according to the requirement.

Swapping

Demand paging

Paging

Segmentation

Question 7 of 20

Question 8 of 20

8. A thread shares its resources(like data section, code section, open files, signals) with ___________

other process similar to the one that the thread belongs to

other threads that belong to the same process

all of the mentioned

other threads that belong to similar processes

Question 8 of 20

Question 9 of 20

9. When a web page is loading, and the user presses a button on the browser to stop loading the page?

the thread loading the page does not stop but continues with another task

the thread loading the page continues with the loading

the thread loading the page is cancelled

the thread loading the page is paused

Question 9 of 20

Question 10 of 20

10. If one thread opens a file with read privileges then ___________

other threads in the another process can also read from that file

all of the mentioned

any other thread can not read from that file

other threads in the same process can also read from that file

Question 10 of 20

Question 11 of 20

11. If exec is called immediately after forking ____________

all the threads will be duplicated

none of the mentioned

all the threads may be duplicated

the program specified in the parameter to exec will replace the entire process

Question 11 of 20

Question 12 of 20

12. Because the kernel thread management is done by the Operating System itself ___________

none of the mentioned

kernel threads are faster to create than user threads

kernel threads are slower to create than user threads

kernel threads are easier to manage as well as create then user threads

Question 12 of 20

Question 13 of 20

13. Which of the following system calls does not return control to the calling point, on termination?

fork

longjmp

ioctl

exec

Question 13 of 20

Question 14 of 20

14. Which binary format is supported by linux?

a.out

elf

none of the mentioned

both a.out and ELF

Question 14 of 20

Question 15 of 20

15. In most cases, if a process is sent a signal while it is executing a system call ____________

none of the mentioned

the system call will continue execution and the signal will be ignored completely

the system call is interrupted by the signal, and the signal handler comes in

the signal has no effect until the system call completes

Question 15 of 20

Question 16 of 20

16. Working set model for page replacement is based on the assumption of ____________

locality

globalization

random access

modularity

Question 16 of 20

Question 17 of 20

17. Linux uses a time-sharing algorithm ___________

for tasks where absolute priorities are more important than fairness

all of the mentioned

none of the mentioned

to pair preemptive scheduling between multiple processes

Question 17 of 20

Question 18 of 20

18. When one thread immediately terminates the target thread, it is called ____________

Sudden Termination

Systematic cancellation

Deferred cancellation

Asynchronous cancellation

Question 18 of 20

Question 19 of 20

19. The first linux kernel which supports the SMP hardware?

linux 1.0

linux 2.0

linux 1.2

linux 0.1

Question 19 of 20

Question 20 of 20

20. The replacement of a bad block generally is not totally automatic because ___________

bad block does not contain any data

none of the mentioned

data in bad block can not be replaced

data in bad block is usually lost

Question 20 of 20

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