Processing is the manipulation or a transformation, of letters, numbers or graphic symbols that constitute data. It's the term which describes the process of the software program manipulating data from a stored file.
In a computer operating system that uses paging for virtual memory management, page replacement algorithms decide which memory pages to page out, sometimes called swap out, or write to disk, when a page of memory needs to be allocated.
Which of the following systems software does the job of merging the records from two files into one?
In computing, particularly in the context of the Unix operating system and its workalikes, fork is an operation whereby a process creates a copy of itself. It is usually a system call, implemented in the kernel. Fork is the primary method of process creation on Unix-like operating systems.
In computer science, thrashing occurs when a computer's virtual memory resources become saturated, leading to a constant state of paging, to the exclusion of most application-level processing. This causes the performance of the computer to degrade or collapse.