Operating System (OS)
The necessary conditions needed before deadlock can occur?

No Mutual Exclusion, Hold and wait, Preemption, Circular Wait
Mutual Exclusion, No Hold and wait, Preemption, Circular Wait
Mutual Exclusion, Hold and wait, No Preemption, Circular Wait
Mutual Exclusion, Hold and wait, Preemption, No Circular Wait

ANSWER DOWNLOAD EXAMIANS APP

Operating System (OS)
Feed back queue

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

ANSWER DOWNLOAD EXAMIANS APP