Which part of the system software always resides in main memory ?
Loader part of the system software always resides in main memory.
Loaderis a part of
operating system which
is used for loading programs. It is one of the essential stages in the
process of starting a program, as it places programs into memory and prepares
them for execution. Loading
a program involves tasks such as reading the contents of the executable file
containing the program instructions into memory, and then carrying out other
required preparatory tasks to prepare the executable for running.
System
softwareis computer software designed to provide a platform to
other software. Examples of system software include operating systems, computational science software, game engines, industrial automation, and software as service applications.