In a racing simulation program, how does encapsulation improve the management of vehicle and race data?

Question

BlackTom AI · Accepted Answer

Question restatement: In a racing simulation program, how does encapsulation improve the management of vehicle and race data?

Option 1: By eliminating the need for methods, allowing classes to focus solely on data storage. This is incorrect because encapsulation does not imply removing methods. In fact, encapsulation relies on bundling data with the methods that operate on it, i.e., behavior, to protect and manage access. Relying only on data storage would ignore how the data should be manipulated or validated.

Option 2: By grouping related data and behaviors, reducing the chance of accidental data modification and improving code readability. This statement accurately describes encapsulation. By keeping data and the operations that act on that data together inside classes, you restrict direct external access, enforce invariants, and present a clear interface, which enhances maintainability and readability in a complex system like a racing simulator.

Option 3: By duplicating data across multiple classes to ensure redundancy. This describes data duplication, not encapsulation. Duplication can lead to inconsistency and increased maintenance work. Encapsulation emphasizes single, well-defined data locations within objects rather than scattering copies elsewhere.

Option 4: By combining all program data into a single global database for easy access. This contradicts encapsulation’s goals. A global database or global variables create tight coupling and expose data broadly, making it harder to enforce access control and invariants. Encapsulation promotes controlled access through object boundaries rather than unbounded global access.

In a racing simulation program, how does encapsulation improve the management of vehicle and race data?单项选择题

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A mutator (setter) method has no control over the way that a class's data attributes are modified.

Object-oriented programming allows us to hide the object's data attributes from code that is outside the object.

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