SOLID Principles Practice Test & Interview Questions

One of the best ways to become good at any subject is by practicing it regularly. There are many ways to practice, and it’s up to you to choose an interesting way. I believe solving practice tests is the most effective way to refresh your knowledge without having to study the theory again. When you do practice tests, it helps bring back what you have already learned.

In this article, we’ll go through a SOLID Principles Practice Test with multiple-choice questions (MCQs). These questions will be a mix of concept-based, code-based, and scenario-based. After each question, we will explain why the answer is right or wrong. Pay attention to the wrong options too, as they might cover other useful insights. Let’s jump into it!”

Q#1. (Scenario-based, Single-Select)

A software system for managing employee records is growing in complexity. One developer suggests adding a method to the Employee class that handles both updating employee details and generating a report for HR. According to the Single Responsibility Principle (SRP), what would be the best approach?

A) Combine both functionalities in the Employee class for ease of access
B) Separate the functionalities into different classes
C) Use inheritance to override the reporting functionality in the Employee class
D) Refactor the…