All of the following are common measures of performance except __________.
a) throughput
b) reliability
c) processor utilization
d) ease of use
b) reliability
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Which of the following statements is false?
a. In the UML, each class is modeled in a class diagram as a rectangle with three compartments. The top one contains the class’s name centered horizontally in boldface. The middle one contains the class’s attributes, which correspond to instance variables in Java. The bottom one contains the class’s operations, which correspond to methods and constructors in Java. b. UML represents instance variables as an attribute name, followed by a colon and the type. c. Private attributes are preceded by the keyword private in the UML. d. The UML models operations by listing the operation name followed by a set of parentheses. A plus sign (+) in front of the operation name indicates that the operation is a public.
If you turn to the back of a personal computer, you will see several __________ for plugging peripheral devices into the system.
a. messaging ports b. slots c. device ports d. none of the above
Why would a programmer use a flag?
A. To remember when or if something has happened in a program. B. As a temporary variable in a complicated equation. C. To let the operating system know an error has occurred. D. Flags are used to indicate program shutdown status.
A system of passing exceptions through the chain of calling methods has great advantages because it allows methods to handle exceptions wherever the programmer has decided it is most appropriate.
Answer the following statement true (T) or false (F)