Operating Systems Questions

The process states of unix are running,Zombie,stopped,Waiting.

All the above listed are the System calls for process management

It is used to get parent process identifier

Paging is a memory management technique in which process address space is broken into blocks of the same size called pages.

1) ability to support multiple processors
2) virtual storage
3) source level debugging

In a cached system, the base addresses of the last few referenced pages is maintained in registers called the TLB that aids in faster lookup. TLB contains those page-table entries that have been most recently used. Normally, each virtual memory reference causes 2 physical memory accesses- one to fetch appropriate page-table entry, and one to fetch the desired data. Using TLB in-between, this is reduced to just one physical memory access in cases of TLB-hit.

Process Dispatcher,Vhand,Dbflush are the children of Scheduler