The _____ allows an expert system user to understand how the system arrived at its results.
A. inference engine
B. knowledge base
C. explanation facility
D. knowledge acquisition facility
Answer: C
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Suppose we have a header node in a linked list and start points to this header node. When removing the first (nonempty) node in the linked list, we do not have to move the start pointer because:
A. we should never move the start pointer in any linked list B. header nodes have no information, so they are never removed – the start pointer continually points to the header node C. if the header node needs to be removed, start is simply set to NULL D. start always points to a node with information
Which of the following is NOT true about friends?
A) When you remove someone from your friends list, you defriend him or her. B) There is no limit to the number of friends you can have on Facebook. C) Facebook lets you search for potential friends from your existing email and instant message contact lists. D) Facebook lets you create custom lists of friends which are subsets of friends organized however you wish.
________ combinations are a set of keys pressed together to perform some sort of action
A) Key B) Click C) Mouse D) Gesture
A ________ is a group of characters or bytes that conveys meaning.
(a) database (b) record (c) character set (d) field