Why is it complicated to protect a system, Operating System

Assignment Help:

Q. Why is it complicated to protect a system in which users are allowed to do their own I/O?

Answer: In earlier chapters we identified a distinction among kernel and user mode where kernel mode is utilized for carrying out privileged operations such as I/O. One reason why I/O should be performed in kernel mode is that I/O requires accessing the hardware as well as proper access to the hardware is necessary for system integrity. If we permit users to perform their own I/O we can't guarantee system integrity.


Related Discussions:- Why is it complicated to protect a system

What is the main function of the memory-management unit, What is the main f...

What is the main function of the memory-management unit? The runtime mapping from virtual to physical addresses is done by a hardware device known as a memory management unit (

Three conditions that solution for critical section problem, What are three...

What are three conditions that a solution for the critical section problem must satisfy? The three conditions are as following:- a)      Mutual exclusion :- if a process is

Define process swapping , Swapping : Whole process is moved from the swap...

Swapping : Whole process is moved from the swap machine to the main memory for execution. Process size must be equal or less than to the used main memory. It is easier to exe

Estimation the number of input - output per second, Q. Remapping of bad bl...

Q. Remapping of bad blocks by sector sparing or else sector slipping could influence performance. Presume that the drive in Subsequent Exercise has a total of 100 bad sectors at r

Algorithm for reconstructing a logical ring, Q. Present an algorithm for re...

Q. Present an algorithm for reconstructing a logical ring after a process in the ring fails? Answer: Typically distributed systems utilize a coordinator process that performs

Explain the general structure of a typical process, Explain the general str...

Explain the general structure of a typical process? There are basically four main sections through which each of the process has to pass through.The universal algorithm is:-

Define disadvantages of top down parsing of backtracking, Define Disadvanta...

Define Disadvantages of Top Down parsing of Backtracking The disadvantages of top down parsing of backtracking: (i)  Semantic actions cannot be carried out while making a pr

Define the division of labour between client and server, Define the Divisio...

Define the Division of Labour between Client and Server Given our definition of client - server as the interaction between dispersed application logic components it must be not

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd