A+ Guide To It Technical Support
10th Edition
ISBN: 9780357108291
Author: ANDREWS, Jean.
Publisher: Cengage,
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Chapter 14, Problem 12TC
Explanation of Solution
Given: The system is slow as Windows task manager shows that the superfetch service is using a high percentage of CPU time.
To find: The next best step that should be taken when the superfetch service is using a high percentage of CPU time...
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Chapter 14 Solutions
A+ Guide To It Technical Support
Ch. 14 - A user complains that her computer is performing...Ch. 14 - Prob. 2TCCh. 14 - Prob. 3TCCh. 14 - You are troubleshooting an application problem and...Ch. 14 - When a user, Belinda Lim, signs in to Windows, she...Ch. 14 - Prob. 6TCCh. 14 - Prob. 7TCCh. 14 - Prob. 8TCCh. 14 - When Windows first starts and the user signs in, a...Ch. 14 - Prob. 10TC
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- When people say "operating system," what do they really mean? Can the batch OS be modified to improve its user interface? In conclusion, we may say the followingarrow_forwardEarly versions of Windows did not support true preemptive multitasking. Instead, the designers of Windows provided something they called "cooperative multitasking," in which each program was expected to give up control of the CPU at reasonable time intervals so that the Windows dispatcher could provide execution time to another waiting program. Describe the disadvantages of this method.arrow_forwardWhat is the definition of a System Call? I have a few questions about System Call. a) What is it, exactly? -> Why does a System Call work the way it does? Which features of the OS allow for this to happen?arrow_forward
- 3) Saving the state of the old process and loading the saved state of the new process is called__________. a. Context Switching b. Program Counter c. Process Control Block d. Registerarrow_forwardIf you had to compile a list of all the parts that go into the kernel of a standard operating system, how would you sum up the functions of each part?arrow_forwardYou are employed at ABC Computer Inc. as an engineer in their computer architecturedivision that produces the ABC-8 a desktop computer system. There are four possibleperformance improvements. However, the budget will only allow for only oneimprovement. Your boss wants you to recommend the improvement that will provide thegreatest speedup and provide supporting justification. The options are listed below.Operation Percentage of Use Time BeforeEnhancementRead 25% 800nsWrite 15% 950nsProcessing 50% 8nsI/O 10% 500μs (micro-second)• Option A: Reduce the time needed for the Read operation to 600 ns.• Option B: Reduce the time needed for the Write operation to 550 ns.• Option C: Reduce the time needed for the Processing operation to 6 ns.• Option D: Reduce the time needed for the I/O operation to 350 µs (microsecond)arrow_forward
- Identify the state of process when a process has been assigned to a processor by the OS schedule. a. Ready State O b. Wait state O c. Running state d. Terminate Statearrow_forwardSwitching the CPU to another Process requires to save state of the old process and loading new process state is called as __________. A. Process Blocking. B. Parallel processing. C. Context Switch. D. Time Sharing.arrow_forwarda) List the main tasks of an Operating System. b) Draw the main elements of a computer system. c) What is an interrupt? How it is generated? What is a trap? d) What is an interrupt vector? e) What is a system call? Which types of system call do you know? f) In a time-sharing environment, several users share the system simultaneously: How can we reach MM protection? g) In a time-sharing environment, several users share the system simultaneously: How can we reach I/O protection? h) Draw the diagram of 5 process states. What is the semantic of every state? How does a process move from one state to the other?arrow_forward
- Protection is critical in the smooth operation of Operating System. However, to allow flexibility, we need to place minimal constraints upon user. Follows a list of operations which are usually protected. Select the minimal set of instructions which must be protected? Give reason. Change to user mode. Change to kernel mode. Read from kernel memory. Write into kernel memory. Instruction fetch from kernel memory. Turn on timer interrupt. Turn off timer interrupt.arrow_forwardHow about if you broke out the roles of the various parts of an OS kernel?arrow_forwardAnswer the following questions related to the idle and priority idle process in windows 10. with images if that possible. (a) Which priority class has idle according to Task manager? (b) Which other priority classes can you find in the Task Manager? Give an example of a process from each class.arrow_forward
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