In which access control model is all that is not expressly permitted is forbidden?
A. MAC
B. RBAC
C. Rule-based access control
D. DAC
D In a DAC access control model, all that is not expressly permitted is forbidden.
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A "reentrant function" is one that it is safe to call
A. more than once B. even if it is already active
Outline the design of a scheme that uses message retransmissions with IP multicast to overcome the problem of dropped messages. Your scheme should take the following points into account:
i) there may be multiple senders; ii) generally only a small proportion of messages are dropped; iii) unlike the request-reply protocol, recipients may not necessarily send a message within any particular time limit. Assume that messages that are not dropped arrive in sender ordering.
When you are satisfied with your edited video, the next step is to specify ____ settings.
A. movie B. input C. DVD D. output
A behavior is code added to a Web page that enables users to ____.
A. interact with various elements in the Web page B. alter the Web page in different ways C. cause tasks to be performed D. all of the above