Pre-Assessment - Operating Systems for Programmers Exam Questions And Answers

Pre-Assessment - Operating Systems for Programmers Exam Questions And Answers What is the role of the OS? - ANS To manage a computer's hardware Which OS service provides functions that are helpful to the user? - ANS Program execution Which OS service provides functions that are helpful to the user? - ANS Program execution Which system call is used for device manipulation? - ANS ReadConsole() Which system calls can be grouped under the category of process controls? - ANS Allocate, free memory Which service function is responsible for identifying and correcting exceptions such as the lack of paper in a printer? - ANS Error detection Which type of OS service uses the CLI? - ANS User interface What represents layer zero (0) in the layered approach? - ANS Hardware What is a disadvantage of booting an OS stored in ROM? - ANS Changing a bootstrap requires new hardware chips. What is a valid process state? - ANS Waiting What are two valid components of a process control block (PCB)? - ANS The process counter & The process state What is the difference between kernel and user threads? - ANS Kernel threads are directly managed by the operating system, whereas user threads are managed without kernel support.