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WGU C191 DATA TEST & OS FULL STUDY SET QUESTIONS AND CORRECT ANSWERS GRADED A+ BEST FOR REVISION!!! $10.49   Add to cart

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WGU C191 DATA TEST & OS FULL STUDY SET QUESTIONS AND CORRECT ANSWERS GRADED A+ BEST FOR REVISION!!!

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ice function is responsible for identifying and correcting excep-tions such as the lack of paper in a printer?: Error detection 6. Which type of OS service uses the CLI?: User interface 7. What represents layer zero (0) in the layered approach?: Hardware 8. What is a disadvantage of booting an...

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  • November 30, 2023
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WGU C191 DATA TEST & OS FULL
STUDY SET QUESTIONS AND
CORRECT ANSWERS GRADED A+
BEST FOR REVISION!!!






,1. What is the role of the OS?: To manage a computer's hardware

2. Which OS service provides functions that are helpful to the user?: Programexecution

3. Which system call is used for device manipulation?: ReadConsole()

4. Which system calls can be grouped under the category of process con-trols?: Allocate, free

memory

5. Which service function is responsible for identifying and correcting excep-tions such as the

lack of paper in a

printer?: Error detection

6. Which type of OS service uses the CLI?: User interface

7. What represents layer zero (0) in the layered approach?: Hardware

8. What is a disadvantage of booting an OS stored in ROM?: Changing abootstrap requires

new hardware chips.

9. What is a valid process state?: Waiting

10. What are two valid components of a process control block (PCB)?: Theprocess counter &

The process state

11. What is the difference between kernel and user threads?: Kernel threads aredirectly managed by

the operating system, whereas user

threads are managed without kernel support.

12. Which advantage does short-term scheduling have compared with long-term

scheduling?: It takes less time to select a process to execute next.

13. What is considered stable when the average rate of process creation isequal to the average


, departure rate

of processes leaving the system?: The degree of multiprogramming

14. Which action allows an application that is in the background to be passedto the foreground

and vice versa?: Memory reload

15. What is the process of context switching?: Performing a state save and astate restore

16. Which features are included in the DTrace tool?: Compiler, providers ofprobes, and

consumers

17. What is the difference between cooperative and preemptive scheduling?-

: Cooperative scheduling occurs when a process terminates, whereas preemptivescheduling occurs

when a process initiates.

18. Which scheduling criteria measures the number of processes completedper time unit?:

Throughput

19. Which criterion attempts to keep the processor as busy as possible?: CPUutilization

20. When does starvation occur in the priority scheduling algorithm?: When aprocess is waiting

indefinitely

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