For each sub question, state who is the creater, who is the owner of the object,

Question

For each sub question, state who is the creater, who is the owner of the object, what is the computer system, who is the admin of the system, and who decides the permission for your selected type of access control.

1. Classify each of the following as an example of a mandatory, discretionary, or originator controlled policy, or a combination thereof. Justify your answers.

a) The file access control mechanisms of the UNIX operating system.

b) A system in which no memorandum can be distributed without the author's consent.

c) A military facility in which only generals can enter a particular room.

d) A university registrar's office, in which a faculty member can see the grades of a particular student provided that the student provided that the student has given written permission for the faculty memeber to see them.

***** Please don't forget to state the creator, owner, computer system, admin, and who decides permission for a, b, c, and d stated at the beginning.*****

Explanation / Answer

a)

Combination of all. UNIX uses own rights, which the user can set right deciphering whether someone else can own the file. This is discretionary and originator controlled. Mandatory controlled policy could relate users to the kernel, they are not allowed to edit it.

b)

Originator controlled policy. Only takes account of the author’s consent

c)

Mandatory controlled policy. Only the people that must know the information will acquire it. Every one under this level does not have access.

d)

Discretionary control policy. The student my give the admittance to the faculty member viewing the students grades according to the students discretion

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