When should a constructor use an initializer?
a. when the value of the data member needs validation
b. when the stack is full
c. when the value of the data member has no restrictions
d. when the stack is empty
c. when the value of the data member has no restrictions
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The ____ aggregate function is used to find the number of records meeting the criteria in each group.
A. Count B. Num C. Sum D. Expression
One of the goals of advertising is to create visual interest in order to attract people.
Answer the following statement true (T) or false (F)
Suppose the link between routers 1 and 2 is down in the Internet shown in Figure 8-1 on page 289. What happens if someone at site C sends a message to a user on a workstation attached to the Ethernet cable at site A? What happens if the router at site A is down? What does this tell you about design- ing network configurations?
What will be an ideal response?
Which of the following is not a component of an expert system?
A. Speech recognition B. knowledge base C. inference engine D. user interface