The OS provides its services through a well-defined ____.

A. GUI
B. UI
C. command line interface
D. API


Answer: D

Computer Science & Information Technology

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Consider a hypothetical car hire company and sketch out a three-tier solution to the provision of their underlying distributed car hire service. Use this to illustrate the benefits and drawbacks of a three-tier solution considering issues such as performance, scalability, dealing with failure and also maintaining the software over time.

What will be an ideal response?

Computer Science & Information Technology

Ruby requires that programmers specify a numeric class type, otherwise errors occur.

Answer the following statement true (T) or false (F)

Computer Science & Information Technology

A parallel array is used to create string arrays because multiple characters are included within each element.

Answer the following statement true (T) or false (F)

Computer Science & Information Technology

Analyze the following code fragments that assign a boolean value to the variable even.

Code 1: if (number % 2 == 0) even = true; else even = false; Code 2: even = (number % 2 == 0) ? true: false; Code 3: even = number % 2 == 0; a. Code 2 has a compile error, because you cannot have true and false literals in the conditional expression. b. Code 3 has a compile error, because you attempt to assign number to even. c. All three are correct, but Code 1 is preferred. d. All three are correct, but Code 2 is preferred. e. All three are correct, but Code 3 is preferred.

Computer Science & Information Technology