C#/.NET – 50 Essential Interview Questions (Junior Level)

Get ready for your next interview. An in-depth guide to C# fundamentals, SOLID principles and popular design patterns.

Do you look for a new job and you want to impress the interviewer?

What you’ll learn

  • Prepare for the 50 most popular questions from C# technical interviews..
  • With bonus questions, learn answers to 160 interview questions in total!.
  • Get ready for tricky questions by gaining a deep understanding of the C#-related topics..
  • Master fundamental concepts of object-oriented programming..
  • Learn SOLID principles..
  • Get to know 5 popular design patterns..

Course Content

  • Introduction –> 5 lectures • 12min.
  • What is the Common Intermediate Language (CIL)? –> 1 lecture • 5min.
  • What is the Common Language Runtime (CLR)? –> 1 lecture • 8min.
  • What is the difference between C# and .NET? –> 1 lecture • 5min.
  • What is the difference between value types and reference types? –> 1 lecture • 12min.
  • What is boxing and unboxing? –> 1 lecture • 6min.
  • What are the three main types of errors? –> 1 lecture • 7min.
  • How are exceptions handled in C#? –> 1 lecture • 10min.
  • What are the types of access modifiers in C#? –> 1 lecture • 13min.
  • What are the default access modifiers in C#? –> 1 lecture • 5min.
  • What is the purpose of the “sealed” modifier? –> 1 lecture • 7min.
  • What is the purpose of the “params” keyword? –> 1 lecture • 4min.
  • What is the difference between a class and a struct? –> 1 lecture • 6min.
  • What are partial classes? –> 1 lecture • 7min.
  • What does the “new” keyword do? –> 1 lecture • 5min.
  • What is the purpose of the “static” keyword? –> 1 lecture • 11min.
  • What is a static class? –> 1 lecture • 6min.
  • What is the purpose of the ternary conditional operator? –> 1 lecture • 8min.
  • What is the purpose of the null coalescing and null conditional operators? –> 1 lecture • 7min.
  • What is encapsulation? –> 1 lecture • 7min.
  • What is LINQ? –> 1 lecture • 6min.
  • What are extension methods? –> 1 lecture • 7min.
  • What is IEnumerable? –> 1 lecture • 9min.
  • What is the difference between the equality operator (==) and Equals? –> 1 lecture • 9min.
  • What is the difference between deep copy and shallow copy? –> 1 lecture • 8min.
  • What is the Garbage Collector? –> 1 lecture • 12min.
  • What are nullable types? –> 1 lecture • 6min.
  • What is a property? –> 1 lecture • 10min.
  • What are generics? –> 1 lecture • 6min.
  • What is the difference between the “const” and the “readonly” modifiers? –> 1 lecture • 7min.
  • What is the difference between the “ref” and the “out” keywords? –> 1 lecture • 8min.
  • What is the difference between an interface and an abstract class? –> 1 lecture • 10min.
  • What is polymorphism? –> 1 lecture • 3min.
  • What’s the difference between a virtual method and an abstract method? –> 1 lecture • 7min.
  • What is the method overloading? –> 1 lecture • 7min.
  • What is the difference between method overriding and method hiding? –> 1 lecture • 10min.
  • Does C# support multiple inheritance? –> 1 lecture • 6min.
  • What is the DRY principle? –> 1 lecture • 10min.
  • What is the “magic number” antipattern? –> 1 lecture • 6min.
  • Why is using the “goto” keyword considered a bad practice? –> 1 lecture • 12min.
  • What is the “spaghetti code”? –> 1 lecture • 10min.
  • What is the Singleton design pattern? –> 1 lecture • 7min.
  • What is the Builder design pattern? –> 1 lecture • 10min.
  • What is the Adapter design pattern? –> 1 lecture • 5min.
  • What is the Bridge design pattern? –> 1 lecture • 5min.
  • What is the Factory Method design pattern? –> 1 lecture • 6min.
  • What is the “S” in the SOLID principles? –> 1 lecture • 9min.
  • What is the “O” in the SOLID principles? –> 1 lecture • 12min.
  • What is the “L” in the SOLID principles? –> 1 lecture • 9min.
  • What is the “I” in the SOLID principles? –> 1 lecture • 9min.
  • What is the “D” in the SOLID principles? –> 1 lecture • 8min.
  • Congratulations! –> 1 lecture • 1min.

C#/.NET - 50 Essential Interview Questions (Junior Level)

Requirements

  • Basic knowledge of the C# programming language..

Do you look for a new job and you want to impress the interviewer?

Would you like to be more confident and relaxed during technical interviews?

Or maybe you just want to master the fundamental concepts related to C# programming?

In either case, this course is for you!

 

Check out the free video with one of the most popular questions from C# interviews – “What is the difference between an interface and an abstract class?

 

This course will prepare you for the 50 most common C# interview questions. Each topic comes with several bonus questions, so we will learn the answers to 160 questions in total!

 

We will look under the hood of the C# mechanisms that are most often discussed during the interviews, so no trick question can surprise you. Each topic will be explained in detail, so you will not only be able to give the interviewer a satisfying answer to the question, but you will also gain a deep understanding of those subjects and become a better programmer.

 

Even if you are not preparing for the interview at this moment, this course will help you to strengthen your coding skills and to connect the dots between the topics you often heard of, but perhaps never had a chance to understand in depth.

 

Practice makes perfect, so we will learn by coding. A GIT repository is attached to this course, and there you can find code for each of the lectures.

 

Besides C#, we will also discuss other topics that are common during any programming interview, like the SOLID principles or the most popular design patterns.

 

If you like to memorize knowledge with flashcards, you will find printable cards as well as an Anki deck amongst the resources attached to this course.

 

Thanks to this course, you will be well-prepared for your next interview, and you will discuss C# matters with confidence.

 

This course comes with a 30-day money-back guarantee. If you are not satisfied, you can return it and get all your money back, no questions asked.

 

Join me in this course and ace your next interview!