Question

Suppose we have two hierarchies of classes. C1 is a superclass with D1, E1, and F1 as concrete subclasses and C2 is a superclass with D2 and E2 as concrete subclasses. C1 has abstract methods f1() and g1() and C2 has abstract methods f2() and g2(). There is Bridge from C1 to C2.

Use the above scenario for answering questions 1-3.

Question 1 (1 point)

Each object of type C1 should hold a reference to an object of type C2.

Question 1 options:

	a) True
	b) False

Question 2 (1 point)

Methods _____ may utilize methods ____ to accomplish their respective functionalities

Question 2 options:

	a) f1() and g1() .... f2() and g2()
	b) f2() and g2() .... f1() and g1()
	c) Both (a) and (b)
	d) Neither (a) nor (b)

Question 3 (1 point)

Without using the Bridge pattern, the total number of classes in the two hierarchies would

Question 3 options:

	a) still be 5
	b) be less than 5
	c) be 6
	d) not be any of (a)-(c)

Question 4 (1 point)

Which of the following patterns is used for grouping Shape objects?

Question 4 options:

	a) Bridge
	b) Composite
	c) Compound
	d) Command

Answer 1

Solution

Explanation

Bridge design pattern allows you to separate the abstraction from the implementation it is not used for grouping shape objects

Hence, Bridge pattern is incorrect

Composite design pattern is a structural design pattern that can be used when a group of objects can be treated the same as a single object in that group,therefore we can do the grouping of shape objects using this pattern

Hence, Composite pattern is the correct answer

Compound design pattern used to combine two patterns into a solution that used to solve a recurring or general problem. Here we are grouping shape object only

Hence, compound pattern is incorrect

Command pattern is a behavioral design pattern in which an object is used to encapsulate all information needed to perform an action or trigger an event at a later time

Hence, Command pattern is incorrect

Therefore
Composite pattern
option b is the correct answer

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solved question with detailed explanation

really sorry couldnt able to finish the reamining

all the best