The time required to move the disk arm to the required track is the __________.
Fill in the blank(s) with the appropriate word(s).
rotational delay (rotational latency)
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Select the best reason to include height and width attributes on an image element.
a. they are required attributes and must always be included b. to help the browser render the page faster because it reserves the appropriate space for the image c. to help the browser display the image in its own window d. none of the above
A user of an object is referred to as a _______.
Fill in the blank(s) with the appropriate word(s).
Consider a Rectangle class and a Square class that inherits from the Rectangle class:
a. Write post conditions for the Rectangle.setWidth(w:int) and the Rectangle.setHeight(h:int) operations in terms of the Rectangle.getWidth():int and the Rectangle.getHeight():int operations. b. Write an invariant for the Square class stating that the width and height of a Square should always be the same. c. Consider the rules for inheriting contracts described in Section 9.4.5 in the context of the Square.setWidth() and Square.setHeight() operations of the Square class. Are all rules met? Why not? What should change in the model?
The rotation of a subtree requires an exchange of pointers among ____ subtree pointers.
A. one B. two C. three D. four