COM Component reuse - Quiz Explanation

The answers you selected are indicated below, along with text that explains the correct answers.

1.	C++ inheritance is Please select the best answer.
	A.	A reuse mechanism that integrates objects at runtime
	B.	A reuse mechanism that integrates objects at development/build time
	C.	Not a reuse mechanism
	D.	A binary reuse mechanism
	The correct answer is B. You need an include file describing the layout of base classes to compile with your code.

2.	Component reuse is Please select the best answer.
	A.	How one component inherits functionality from another
	B.	Not very useful because it does not support inheritance
	C.	Based on object composition at runtime
	D.	A source-code-based mechanism
	The correct answer is C. Objects are composed at runtime.

3.	Object composition can be Please select the best answer.
	A.	A limited mechanism because it does not support inheritance
	B.	Multilevel, that is, object A reuses object B, which reuses object C
	C.	Set up when you compile your code
	D.	Obtained by inheriting the implementation of a set of base objects
	The correct answer is B. Objects can be composed in a multilevel fashion.

4.	Assume we have a client, the `FileManager` component, and the `FindFile` component. Which of the following is correct? Please select the best answer.
	A.	The client is aware that `FileManager` is using the `FindFile` component.
	B.	The client can tell `FileManager` not to load `FindFile`.
	C.	The client sees only the `FileManager` component; `FileManager` is a composition of two components--itself and `FindFile`.
	D.	The client links to a library that contains object definitions for `FileManager` and `FindFile`.
	The correct answer is C. The `FindFile` component is not visible as a separate component to the client; `FileManager` is composed of itself and `FindFile`.