Question: 20. A deadlock avoidance algorithm dynamically examines the to ensure that a circular wai condition can never exist. a. Operating system. b. Resources. c. System

20. A deadlock avoidance algorithm dynamically examines the to ensure that a circular wai condition can never exist. a. Operating system. b. Resources. c. System storage state. d. Resource allocation state. 21. Swapping be done when a process has pending I/O or has to execute I/O operations only int operating system buffers. a. Must never. b. Maybe. c. Can. d. Must ? a. 22. The main memory accommodates CPU. b. User processes. c. Operating system. d. All of the mentioned 4
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