Which of the following is not an example of a capability?

A.
Token

B.
ACL

C.
Ticket

D.
Key

Explanation:
A capability can be in the form of a token, ticket, or key. When a subject presents a capability, the operating system (or application) will review the access rightsand operations that are outlined in the capability and allow the subject to carryout just those functions. A capability is a data structure that contains a uniqueobject identifier and access rights. A capability is tied to a subject and an ACL is tied to an object.