Relationship among a(x,y) and a(z,y) for an arbitrary object, Operating System

Assignment Help:

Q. The RC 4000 system as well as other systems have defined a tree of processes (called a process tree) such that all the descendants of a process are given resources (objects) as well as access rights by their ancestors only. Therefore a descendant can never have the ability to do anything that its ancestors cannot do. The root of the tree is the OS (operating system) which has the ability to do anything. Presume the set of access rights was represented by an access matrix, A. A(x, y) defines the access rights of process x to object y. If x is a descendant of z, what is the relationship among A(x,y) and A(z,y) for an arbitrary object y?

Answer: A(x,y) is a subset of A(z,y).


Related Discussions:- Relationship among a(x,y) and a(z,y) for an arbitrary object

Determine the reasons for poor response time, Determine the reasons for Poo...

Determine the reasons for Poor response time Process busy or High I/O rates or High paging rates

Explain fixed partitioning, Explain fixed partitioning. Partitioning ar...

Explain fixed partitioning. Partitioning are the simpler techniques that don't involve virtual memory. Partitioning has been used in numerous variations in operating systems.

Binary and data representation, Computing uses three number bases:- Binary ...

Computing uses three number bases:- Binary (base 2), Octal (base 8) and Hexadecimal (base 16). Binary has been described before, although various catchphrases are used to describe

What are tree-structured directories, What are Tree-structured directories ...

What are Tree-structured directories We can generalize the directory structure to a tree of arbitrary height. This permits the user to create their own sub directories and to c

What is a resource-allocation graph, What is a resource-allocation graph? ...

What is a resource-allocation graph? Deadlocks can be explained more precisely in terms of a directed graph called a system resource allocation graph. This graph having of a se

Operating system design, You are required to study the important system com...

You are required to study the important system components, including important data structures, important functions and algorithms, and the various organizational, structural, logi

Vehicle tasks using semaphores, Gopher Gallery consists of a shopping mall ...

Gopher Gallery consists of a shopping mall and a cart ride that covers  the 150 acre habitat. There are m visitors and n single-person vehicles. Visitors  stroll around the mall at

Which of the subsequent instructions should be privileged, Q. Which of the ...

Q. Which of the subsequent instructions should be privileged? a) Read the clock b) Clear memory c) Set value of timer d) Issue a trap instruction e) Turn off interr

Briefly explain about file system implementation, Briefly explain about fil...

Briefly explain about file system implementation? Several on-disk and in-memory structures are used to execute a file system. On disk, the file system may have information abou

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