Please answer the 4 multiple choice questions below:

A zombie process cannot be killed by any living thread in the system. When a page is removed from the free list but just before it is mapped into the address space of the process whose thread caused the page fault, that page must be overwritten with the correct content required by the faulting thread. Load control measures that attempt to retreat from thrashing are usually triggered by the number of times the page-purger must run per second. Scheduling a previously run thread to the same CPU it previously ran on will minimize any execution errors