WGU C191 Full Study Set | 220 Questions and Correct Solutions Latest Update

WGU C191 Full Study Set | 220 Questions and Correct Solutions Latest Update What is the role of the OS? - Answer -To manage a computer's hardware Which OS service provides functions that are helpful to the user? - Answer -Program execution Which OS service provides functions that are helpful to the user? - Answer -Program execution Which system call is used for device manipulation? - Answer -ReadConsole() Which system calls can be grouped under the category of process controls? - Answer -Allocate, free memory Which service function is responsible for identifying and correcting exceptions such as the lack of paper in a printer? - Answer -Error detection Which type of OS service uses the CLI? - Answer -User interface What represents layer zero (0) in the layered approach? - Answer -Hardware What is a disadvantage of booting an OS stored in ROM? - Answer -Changing a bootstrap requires new hardware chips. What is a valid process state? - Answer -Waiting What are two valid components of a process control block (PCB)? - Answer -The process counter & The process state What is the difference between kernel and user threads? - Answer -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? - Answer -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? - Answer -The degree of multiprogrammingWhich action allows an application that is in the background to be passed to the foreground and vice versa? - Answer -Memory reload What is the process of context switching? - Answer -Performing a state save an