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Lecture 9 Quiz: Operating Systems Principles

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Each quiz / lecture is worth the same amount of points. Answers are viewable after completing all quiz attempts. You may take as much time as you'd like, and may use any resources such as lecture slides, online resources, etc. but, per the Stanford Honor Code, you should not discuss answers with other students in the course. The course staff can also answer questions on Ed or at helper hours, but are unable to confirm answer correctness for questions on the quiz. Which of the following (select as many as apply) correctly describe the behavior of waitpid? Not quite - give it another try! In the following program, which of the following outputs are possible? Assume the child's PID is 450. Select all that apply. Output A: Output B: Output C: Output D: Output E: Here is a version of the shell program from lecture, but not using fork or waitpid. Which one of the following would be a possible run of this program? Output A: > ls [lists files here] > Output B: > ls > Output C: > ls [SHELL

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