Answer:
Step-by-step explanation:
The correct answer is none of these
An operating system that allows a single user to perform only one task at a time is called a Single-User Single-Tasking Operating System. Functions like printing a document, downloading images, etc., can be performed only one at a time. Examples include MS-DOS, Palm OS, etc.
Advantage: This operating system occupies less space in memory.
Disadvantage: It can perform only a single task at a time.
There are four types of operating systems −
Real-time operating system
Single-User/Single-Tasking operating system
Single-User/Multitasking operating system
Multi-User/Multitasking operating system
Real-time operating system is designed to run real-time applications. It can be both single- and multi-tasking. Examples include Abbasi, AMX RTOS, etc.
An operating system that allows a single user to perform more than one task at a time is called Single-User Multitasking Operating System. Examples include Microsoft Windows and Macintosh OS.
It is an operating system that permits several users to utilize the programs that are concurrently running on a single network server. The single network server is termed as "Terminal server". "Terminal client" is a software that supports user sessions. Examples include UNIX, MVS, etc.