Some CPUs provide multiple modes of operation, how it is ben, Basic Computer Science

even though most systems only distinguish among user and kernel modes, some CPUs provide multiple modes. Multiple modes could be used to provide a finer-grained security strategy. For instance, rather than distinguishing between just client and kernel mode, you could make a distinction between different types of user mode. Possibly users belonging to the equal group could execute each other’s code. The machine would go into a specific mode when one of these users was running code. When the machine was in this mode, a member of the group could run code belonging to someone else in the group. Another option would be to provide different distinctions within kernel code. For instance, a specific mode could allow USB device drivers to run. This would mean that USB devices could be serviced without having to change to kernel mode, thereby basically allowing USB device drivers to run in a quasi-user/kernel mode.
Posted Date: 5/2/2012 3:14:43 AM | Location : United States







Related Discussions:- Some CPUs provide multiple modes of operation, how it is ben, Assignment Help, Ask Question on Some CPUs provide multiple modes of operation, how it is ben, Get Answer, Expert's Help, Some CPUs provide multiple modes of operation, how it is ben Discussions

Write discussion on Some CPUs provide multiple modes of operation, how it is ben
Your posts are moderated
Related Questions
The data stored in memory can be of a lot of types. In case, a person’s age is stored as a numeric value and his or her address is stored as alphanumeric characters. Python has som

Example of autonomous rational agents-Artificial intelligence The procedure of waste water treatment After the level of pollutants in waste water is find out,  following 5

There are many other techniques in which companies who manufacture microprocessors have attempted to get better the performance of their CPUs. Cache memory this is a small quantit

Programming Languages A number of programming languages are available for program writing. These languages can be classified as follows:     Machine language     Assem

The difference between kernel mode and user mode gives a rudimentary form of security in the following manner. Convinced instructions could be executed only when the CPU is in kern

Question 1 Explain Wireless Protocol Requirements and also explain in brief medium access control protocol Question 2 Explain FDMA and TDMA concepts Question 3 Exp

Central Processing Unit (CPU): The CPU is the physical device that controls computer operations. It is considered as the 'brain' of the computer system. The CPU comprises thre


Here are the more specific requirements and the related points - use the below as a check-off list when you make your presentation.  Please note . . . many of the requirements are

Problem 1. What are Micro-operations? Explain Micro operations of the Fetch cycle. Defining Micro-operations Its explanation of the fetch cycle 2. Differen