Describe each of the following four kinds of access control mechanisms interms of (a) ease of determining authorized access during execution, (b) ease ofadding access for a new subject, (c) ease of deleting access by a subject, and (d)ease of creating a new object to which all subjects bydefault have access. a.per-subject access control list (that is, one list for each subject tellsall the objects to which that subject has access) b.per-object access control list (that is, one list for each object tells allthe subjects who have access to that object) c.access control matrix d.capability

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