Packet switching networks
a. can provide virtual circuits
b. do not waste bandwidth when no data is being transmitted
c. use bandwidth more efficiently than circuit switching networks
d. all of the above
d. all of the above
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The unspecified namespace is named _________.
Fill in the blank(s) with the appropriate word(s).
Which of the following statements is false?
a. You cannot prevent client code from creating objects of a class. b. One common use of a private constructor is sharing initialization code among a class’s other constructors. c. Another common use of private constructors is to force client code to use so-called “factory methods” to create objects. d. A factory method is a public static method that creates and initializes an object of a specified type (possibly of the same class), then returns a reference to it.
(Converting Strings to Floating-Point Numbers) Write a program that inputs four strings that represent floating-point values, converts the strings to double values, sums the values and prints the total of the four values. Use only the C-style string-processing techniques shown in this chapter.
What will be an ideal response?
Andrew and Aaron were tired of waiting for their expense book software to be developed by the IS department, so they received guidance from the IS department and created their own. This is an example of ____.
a. rapid application development b. end-user systems development c. traditional systems development life cycle d. prototyping