Operating System (OS)
The function(s) of file system is (are):

to provide security against loss of information due to system failure
to provide for long and short term storage of files with appropriate economic tradeoffs.
All of these
to provide complete file naming freedom to the users and to permit controlled sharing of files
None of these

ANSWER DOWNLOAD EXAMIANS APP

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

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

ANSWER DOWNLOAD EXAMIANS APP