Answers
Running several programs so they appear to happen at once by sharing time on the CPU.
Keeping a record of where each program and its data are stored in RAM.
Managing programs that need to run on the CPU by giving each one a share of CPU time.
The system software that manages computer hardware and the resources used by other software.
The way a person interacts with a computer, for example using icons, windows or typed commands.
A program that allows a specific piece of hardware to communicate with the computer.
Controlling logins and passwords, and restricting what each account can see or do.
Managing the input from and output to external hardware such as mice, keyboards and printers.
The permissions that decide what each person can read, edit or run.
Controlling how stored data is named, saved, moved, copied, deleted and allocated to folders.