Operating System (OS)
The category of operating system that you most likely have running on your PDA computer is a ....... Operating system

Single user, single task
Real time
Multiuser, multitask
Single user, multitask

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Operating System (OS)
Feed back queue

None of these
require manual intervention to implement properly
are used to favor real-time tasks
are very easy to implement
dispatch tasks according to execution characteristics

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Operating System (OS)
What is the method of handling deadlocks?

All of these
Pretend that deadlocks never occur in the system
Use a protocol to ensure that the system will never enter a deadlock state
Allow the system to enter the deadlock state and then recover

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