CIS 247 DeVry Week 1 Quiz Latest

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CIS 247 DeVry Week 1 Quiz Latest

CIS247

CIS 247 DeVry Week 1 Quiz Latest

  1. Question : (TCO 1)The components of a class are called _____ and _____.
  • elements; objects
  • attributes; methods
  • objects; instantiations
  • properties; descriptions

Question 2. Question : (TCO 1) Which of the following would be the most appropriate choice for a method in a Cup class?

  • drink()
  • hot()
  • break()
  • color()

Question 3. Question : (TCO 1) Which of the following statements is/are true?

Objects communicate through message passing.

An object must be defined before you can create a class.

The state of an object should not be hidden.

Implementation details should be visible through the interface of a class.

  • A and C
  • All are true
  • None are true

Question 4. Question : (TCO 1) Which of the following would be the most appropriate choice for a data member in a Screen class?

  • dimensions
  • turnoff
  • refresh
  • activate Screensaver

Question 5. Question : (TCO 1) The property of _____ describes the packaging of state and behavior together in an object.

  • data hiding
  • abstraction
  • encapsulation
  • All of the above
  • None of the above

Question 6. Question : (TCO 8) Most professional coding standards use _____ for class names.

  • underscores along with all upper case words
  • Method Class case
  • no specific naming convention
  • Pascal case

Question 7. Question : (TCO 1) Examine the ClockType class definition. How many attributes does it contain?

class ClockType { public void setTime(int hour, int min, int sec);

public int getTime();

public void printTime();

private int hr;

public int min;

public int sec; }

  • 2
  • 3
  • 9
  • 6
  • An average of 5 because (7+3)/2 = 5

Question 8. Question : (TCO 1) Assume we have two classes and have instantiated an object from each class. How many copies of each class’s attributes and methods exist in the instantiated objects?

  • Two copies, one copy of the first class and one of the second
  • Zero, the objects do not have attributes and methods
  • Only one copy and both objects share it
  • None of the above

Question 9. Question : (TCO 1) Both _____ and _____ allow for code reuse and the building of more complex systems.

  • inheritance; composition
  • UML diagrams; serialization
  • messaging; object behaviors
  • None of the above

Question 10. Question : (TCO 1) Which of the following is a valid statement for a method definition in Java?

  • public int computeAverage { return 1; }
  • public int computeAverage ( return 1; )
  • public int computeAverage () { return 1; };
  • public int computeAverage () { return 1; }