Which of the following is NOT an app that allows you to have a live video conversation using your mobile device?
A. Vine
B. Google Hangouts
C. Skype
D. Apple FaceTime
Answer: A
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Which statement below could be used to simulate the outputs of rolling a six-sided die? Suppose randomNumbers is a SecureRandom object.
a. 1 + randomNumbers.nextInt(6); b. 1 + randomNumbers.nextInt(2); c. 6 + randomNumbers.nextInt(1); d. 3 + randomNumbers.nextInt(3);
Which statement is false?
a. The actual data representation used within the class is of no concern to the class’s clients. b. Clients generally care about what the class does but not how the class does it. c. Clients are usually involved in a class’s implementation. d. Hiding the implementation reduces the possibility that clients will become dependent on class-implementation details.
Answer the following statements true (T) or false (F)
1. Any problem that can be solved recursively can also be solved iteratively, with a loop. 2. Whereas a recursive algorithm might result in faster execution time, the programmer might be able to design an iterative algorithm faster. 3. The recursive case does not require recursion, so it stops the chain of recursive calls. 4. Without a base case, a recursive method will call itself only once and stop.
To select multiple entries in a list, press the ____ key as you click each additional entry.
A. Shift B. Esc C. F4 D. Ctrl