Refer to the information below to answer the question.
In a Multilevel Security (MLS) system, the following sensitivity labels are used in increasing levels of
sensitivity: restricted, confidential, secret, top secret. Table A lists the clearance levels for four users,
while Table B lists the security classes of four different files.
In a Bell-LaPadula system, which user cannot write to File 3?
A.
User A
B.
User B
C.
User C
D.
User D
D Makes no sense
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Correction:
Star * security property—This property states that a subject at one level of confidentiality is not allowed to write information to a lower level of confidentiality. This is also known as “no write down.”
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