1/10
Looks like no tags are added yet.
Name | Mastery | Learn | Test | Matching | Spaced | Call with Kai |
|---|
No analytics yet
Send a link to your students to track their progress
What is a history/resource trace?
A list where the elements of the set are thought of as resource events
What is a sigma property?
a set of histories
what is an event?
actions of a subject on an object
do authorization and availability have to be subject specific?
true
what is the type of the value of a permission matrix element M
set of actions
what is denoted by B in the AC model?
access matrix
what is the clearance constraint for a subject u?
pl(u) < or = cl(u)
which of the following are histories if a and b are events?
() {} (a) (a:b::a::b)
() (a) (a:b::a::b)
which of the following are properties, if a and b are events?
() {} {a} {a,b}
{} {a} {a,b}
in which of the following is x a prefix of y?
x = aba y =ab
x = a y = aab
x = a y = b
x = ba y = abba
x = a y = aab
if a b and c are events which of the following traces are in the set a bar (set of all traces where the event a occurs in the trace)?
(aaba)
(bbbb)
(cbcb)
(ccca)
(aaba) (ccca)