Question

question in picture only 1 number​

Answer 1

Answer:

Multi-user operating system allows concurrent access by multiple users of a computer.

Explanation:

A multi-user operating system is an operating system that permits several users to access a single system running to a single operating system. These systems are frequently quite complex, and they must manage the tasks that the various users connected to them require.

Answer 2

Answer:

LTS) or Windows Server 2016. The server allows multiple users to access the same OS and share the hardware and the kernel, performing tasks for each user concurrently.