Which of the following access control right does not belong to Bell-Lapadula model?

Question 1 options:

	read
	delete
	write
	append

Question 2 (15 points)

Authentication means verifying the identity of the principal making a request.

Question 2 options:

	True
	False

Question 3 (15 points)

which of the following is a disadvantage of discretionary access control (DAC)?

Question 3 options:

	setting up DAC is very cumbersome task for the owner
	subject or owner can set up the access control of object for others based on discretion
	malware application running by an owner can alter access control without his/her knowledge
	none of the above

Question 4 (15 points)

Assume, Protection Ring-based access control. Which of the following statement is true?

Note access level 0, 1, 2, 3 are defined in lecture slides.

Question 4 options:

	System kernel level process can kill a utility level process
	An utility level process can write in a system kernel level process memory.
	A user process can kill the operating system level process.
	None of the above