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WGU - C191, Exam Questions and answers, 100% Accurate, VERIFIED.
WGU - C191, Exam Questions and answers, 100% Accurate, VERIFIED.
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WGU - C191 , Exam Questions and answers, 100% Accurate, VERIFIED. What is the role of the OS? - ✔✔-To manage a computer's hardware Which OS service provi des functions that are helpful to the user? - ✔✔-Program execution Which OS service provides functions that are helpful to the user? - ✔✔-Program executio n Which system call is used for device manipulation? - ✔✔-ReadConsole() Which system calls can be g rouped under the category of process controls? - ✔✔-Allocate, free memory Which service function is responsible for identifying and correcting exceptions such as the lack of paper in a printer? - ✔✔-Error detection Which type of OS service uses the CLI? - ✔✔-User interface What represents layer zero (0) in the layered approach? - ✔✔-Hardware What is a disadvantage of booting an OS stored in ROM? - ✔✔-Changing a bootstrap requires new hardware chips. What is a valid process state? - ✔✔-Waiting What are two valid components of a process control block (PCB)? - ✔✔-The process counter & The proce ss state What is the difference between kernel and user threads? - ✔✔-Kernel threads are directly managed by the operating system, whereas user threads are managed without kernel support. Which advantage does short -term scheduling have compared with long -term scheduling? - ✔✔-It takes less time to select a process to execute next. What is considered stable when the average rate of process creation is equal to the average departure rate of processes leaving the system? - ✔✔-The degree of multiprogramming Which action allows an application that is in the background to be passed to the foreground and vice versa? - ✔✔-Memory reload What is the process of context switching? - ✔✔-Performing a state save and a state restore Which features are included in the DTrace tool? - ✔✔-Compiler, providers of probes, and consumers What is the difference between cooperative and preemptive scheduling? - ✔✔-Cooperative scheduling occurs when a process terminates, whereas preemptive scheduling occurs when a process initiate s. Which scheduling criteria measures the number of processes completed per time unit? - ✔✔-Throughput Which criterion attempts to keep the processor as busy as possible? - ✔✔-CPU utilization When does starvation occur in the priority scheduling algorithm? - ✔✔-When a process is waiting indefinitely
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