Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

Aadssume you are given two ( 0 2 ) bits to capture access operations on a directory. Answer the following questions: a . Name the

Aadssume you are given two (02) bits to capture access operations on a directory. Answer
the following questions:
a. Name the four operations that can be performed on the file or directory to provide
integrity and availability data
(5 marks).
b. How would you use Four (04) operations available from the given two (02) bits?
(5 marks).
c. How would you control the creation and deletion of files? (5marks).
d. How would you implement the concept of "hidden" files with these access
operations? (Hidden files are only visible to authorized subjects.)(5 marks)
a. Define the term a partial ordering. (5 marks).
b. State the reason partial ordering of abilities does not institute a lattice (5 marks).
a. What is a reference monitor and its role in operating system access control
security
(5 marks).
b. Construct the lattice of security levels 'public', 'confidential', and 'strictly
confidential', and for the categories ADMIN, LECTURES, and STUDENTS. (5
marks)
c. Which objects with security label (confidential,(STUDENTS)) in a need-to-
know policy? (5 marks)
d. How many labels can be constructed from n security levels and m categories? For
illustration, consider the values n=16 and m=64. In general, the number of
labels is n3m.
(5marks).
axdvanced security
image text in transcribed

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Databases Demystified

Authors: Andrew Oppel

1st Edition

0072253649, 9780072253641

More Books

Students also viewed these Databases questions