State the required answer precisely and then provide proper

State the required answer precisely and then provide proper explanation. It is not enough to provide one- word or one-line answers.

Briefly describe the following concepts and indicate how they are related in the context of a UNIX operating system: userid (uid), groupid (gid), root user, and file access permissions.  

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Solution

In UNIX OS there is diiferent roles/imporatance of userid (uid), groupid (gid),root user and have differnet file acess permission
where
--UID is a unique positive integer assigned by os to each user. Each user is identified to the system by its UID, and user names are generally used only for humans easability.user have acess to various resources like access to disks, printers, and other peripherals,they create,modify,delete files they have acess to.

--GID also have numeric value used to represent a specific group,they are collection of various user and each group must have superuser.
The use of groups allows additional abilities to be delegated in an organized fashion, such as access to disks, printers, and other peripherals.

--Root user is a special user on each system with unlimited access to the system.root user is required to allow administrative actions that which are not granted under the other users and for certain daemons that have full access to the system. root user is defined by the uid – so multiple superusers could be created by creating multiple entries with this uid.