Explanation/Reference:
Explanation:
The basic features of Unix are as follows:
Multi-user: It supports more than one user to access the system simultaneously through a set of

terminals attached to a system.
Multi-tasking: A user can execute multiple programs at the same time from a single terminal.

Time sharing: The operating system shares CPU time among tasks.

Portability: It is highly portable across hardware.

Modularity: It allows only needed modules to be loaded into the memory.

File structure: It has an inverted tree like file structure, with files and directories created within the file

structure.
Security: All files can be individually protected using read, write, and execute permissions for the user,

group, and others.
Network support: It uses the TCP/IP protocol.

Advanced graphics: CAD-CAM applications perform the best in a Unix System with its varied support

for graphics card.