Describe the benefits and drawbacks of multithreading in contemporary operating systems. The discussion has to include the following :

$1.$Examine the main distinctions between threads operating at the user and kernel levels and how they affect system performance.

$2.$To avoid race situations and deadlocks, describe how operating systems handle thread synchronization and communication.

$3.$Examine multithreading's effect on the performance of multi$-$core CPUs.

$4.$ Find situations where it would not be beneficial to multitask.