1. Memory Management: - The memory management module of an Operating System takes
care of the allocation reallocation of memory space to the various program in need of this
resource.
2. File Management: This includes physical storage location, file permission and file access.
Keeping track of all different files & maintaining the integrity data stored in the files
including file directory structure.
3. Device Management: Accept input and store data on disks and send data to output devices
4. Security: Control access to system resources by Protection against unauthorized access by
use of logins and passwords
5. Job Control: - When the user wants to run an application program, he must communicate
with the Operating System telling it what to do. He does this using Operating System job
control language or JCL. JCL consists of a number of Operating Systems commands, called
system commands that control the functioning of the Operating System.
Kavungya answered the question on May 13, 2019 at 13:39
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