When finished processing the data, you should close the reader and connection objects. Doing so ____.
A. creates a log of the database activities
B. positions the reader back to the beginning row
C. unlocks the database so that other applications can access it
D. flushes the buffer and gets it ready for the next read
Answer: C
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_________________________ refers to the percentage of enlargement or reduction on the screen.
Fill in the blank(s) with the appropriate word(s).
Answer the following statements true (T) or false (F)
1. A widely used technique for pseudorandom number generation is an algorithm known as the linear congruential method. 2. A cryptographically secure pseudorandom bit generator is defined as one that passes the least significant bit test. 3. The security of Blum, Blum, Shub is based on the difficulty of factoring n. 4. The stream cipher is similar to the one-time pad with a difference being that a one-time pad uses a pseudorandom number stream and a stream cipher uses a genuine random number stream. 5. The longer the keyword the more difficult the cryptanalysis.
ArrayIndexOutOfBoundsException is a descendent of the class RuntimeException. This means:
(a) the exception must be caught (b) a finally block must be included (c) the exception does not have to be explicitly caught (d) none of the above
A JavaFX Button’s event handler receives a(n) ________, which indicates that the Button was clicked.
a. ButtonEvent b. ObjectEvent c. ControlEvent d. ActionEvent