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WGU C191 Pre-Assessment Proficiency knowledge test Exam Questions and certified Answers 2024/2025
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WGU C191 Pre-Assessment Proficiency knowledge test Exam Questions and certified Answers 2024/2025 Which features are included in the Trace tool? a) Process match, analyzer, and loader b) Resource-using processes, network statistics, and editor c) Memory activation, I/O monitor, and executio...

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  • October 15, 2024
  • 17
  • 2024/2025
  • Exam (elaborations)
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WGU C191 Pre-Assessment Proficiency
knowledge test Exam Questions and certified
Answers 2024/2025

Which features are included in the Trace tool?


a) Process match, analyzer, and loader
b) Resource-using processes, network statistics, and editor
c) Memory activation, I/O monitor, and execution
d) Compiler, providers of probes, and consumers - correct answer d) Compiler,
providers of probes, and consumers


What is the difference between cooperative and preemptive scheduling?


a) Cooperative scheduling occurs in a ready state, whereas preemptive scheduling
occurs in the running state.
b) Cooperative scheduling occurs in a running state, whereas preemptive scheduling
occurs in the ready state.
c) Cooperative scheduling occurs when a process terminates, whereas preemptive
scheduling occurs when a process initiates.
d) Cooperative scheduling occurs when a schedule allocates CPU resources, whereas
preemptive scheduling occurs when a schedule de-allocates CPU resources. - correct
answer c) Cooperative scheduling occurs when a process terminates, whereas
preemptive scheduling occurs when a process initiates.


Which scheduling criteria measures the number of processes completed per time unit?


a) Throughput
b) CPU utilization
c) Response time

,d) Turnaround time - correct answer a) Throughput


Which criterion attempts to keep the processor as busy as possible?


a) Turnaround time
b) Throughput
c) Response time
d) CPU utilization - correct answer d) CPU utilization


When does starvation occur in the priority scheduling algorithm?


a) When a process is ending
b) When a process is waiting indefinitely
c) When a process is in memory
d) When a process is unloading from memory - correct answer b) When a process is
waiting indefinitely


Which scheduling algorithm was designed especially for time sharing systems?


a) Priority
b) First-come, first-served (FCFS)
c) Round-robin
d) Shortest-job-first (SJF) - correct answer c) Round-robin


What is a difference between soft and hard processor affinity?


a) Hard affinity supports dynamic switching to soft affinity with the sched_setaffinity()
system call.

, b) Hard affinity is implemented on multiprocessor systems, whereas soft affinity is
implemented on single processor systems.
c) Hard affinity keeps a process running on the same processor, whereas soft affinity
system calls support hard affinity.
d) Hard affinity specifies a subset of processors on which a process may run, whereas
soft affinity leaves the processor selection to the OS. - correct answer d) Hard affinity
specifies a subset of processors on which a process may run, whereas soft affinity
leaves the processor selection to the OS.


What is an address that is generated by the CPU?


a) A logical address
b) A memory address register
c) A base address
d) A physical address - correct answer a) A logical address


Which general-purpose storage is accessed directly by the CPU?


a) The main memory
b) The dynamic library
c) The front side bus
d) The base register - correct answer a) The main memory


What is a limitation of swapping on mobile systems?


a) Applications that fail to free up sufficient memory are terminated
b) When more memory is required, the SD card is used as memory
c) User applications reside in protected memory and are difficult to access
d) Background applications must reside in the main memory - correct answer a)
Applications that fail to free up sufficient memory are terminated

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