Learn SOLID Principles – Module L Lesson 1 – Quiz

Quiz Summary

0 of 4 Questions completed

Questions:

You have already completed the quiz before. Hence you can not start it again.

Quiz is loading…

You must sign in or sign up to start the quiz.

You must first complete the following:

Results

Quiz complete. Results are being recorded.

Results

0 of 4 Questions answered correctly

You have reached 0 of 0 point(s), (0)

Question 1 of 4

1. Question

What is the core definition of the Liskov Substitution Principle (LSP)?

Software entities should be open for extension but closed for modification
Correct Incorrect Correct answer

High-level modules should not depend on low-level modules; both should depend on abstractions
Correct Incorrect Correct answer

Clients should not be forced to depend on interface methods they do not use
Correct Incorrect Correct answer

Subtypes must be substitutable for their base types without altering the correctness of the program
Correct Incorrect Correct answer

Correct

Incorrect
Question 2 of 4

2. Question

How does the Liskov Substitution Principle relate to the Open/Closed Principle (OCP)? (select all that apply)

LSP acts as an "enabler" for OCP by ensuring new subclasses work with existing code without modification
Correct Incorrect Correct answer

They are contradictory principles that cannot be applied together
Correct Incorrect Correct answer

Violating LSP often leads to violating OCP, because client code must be modified to handle non-substitutable subclasses (for example, via instanceof checks).
Correct Incorrect Correct answer

LSP requires us to modify the parent class regularly, which violates OCP
Correct Incorrect Correct answer

Correct

Incorrect
Question 3 of 4

3. Question

In the context of “Design by Contract,” how should we define a “precondition”?

A condition that is always true for the class's state regardless of the method called
Correct Incorrect Correct answer

A condition that the method promises to be true after it typically runs
Correct Incorrect Correct answer

A condition that must be true before a method is called
Correct Incorrect Correct answer

A rule that strictly forbids a method from being overridden in a subclass
Correct Incorrect Correct answer

Correct

Incorrect
Question 4 of 4

4. Question

Which of the following is a strong indicator in our code that a subclass is violating the Liskov Substitution Principle?

We are forced to add defensive logic, such as instanceof checks, to handle specific subclasses
Correct Incorrect Correct answer

The subclass adds new methods that are not present in the parent class
Correct Incorrect Correct answer

The subclass overrides a parent method to improve its performance without changing its behavior
Correct Incorrect Correct answer

We are using Dependency Injection to provide the subclass instance
Correct Incorrect Correct answer

Correct

Incorrect

Learn SOLID Principles – Module L Lesson 1 – Quiz

Quiz Summary

Information

Results

Results

Categories

1. Question

2. Question

3. Question

4. Question