shemeriahubbard shemeriahubbard

24-02-2021
Computers and Technology

contestada

Which of the following is a way the operating system prevents unknown or unauthorized users from accessing the system ?

A. Device driver

B. User interface

C. Protected mode

D. Software firewall

Respuesta :

chelowman3 chelowman3

06-10-2021

Answer:

The answer is C. Protected mode

Explanation:

In protected mode, there are four privilege levels or rings, numbered from 0 to 3, with ring 0 being the most privileged and 3 being the least. The use of rings allows for system software to restrict tasks from accessing data, call gates, or executing privileged instructions.

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