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

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

ANSWER DOWNLOAD EXAMIANS APP

Operating System (OS)
The LRU algorithm

pages out the first page in a given area
pages out pages that have been used recently
pages out pages that have been least used recently
None of these
pages out pages that have not been used recently

ANSWER DOWNLOAD EXAMIANS APP