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

Prepare for your next interview. An in-depth guide to crucial C# topics, design principles and popular patterns.

Welcome to the “C#/.NET – 50 Essential Interview Questions (Mid Level)” course! Are you ready to take your knowledge and career to the next level?

What you’ll learn

  • Prepare for the 50 popular questions from C# technical interviews. With bonus questions, learn answers to 150 interview questions in total!.
  • Explore advanced C# topics: events, lambda expressions, reflection and more..
  • Get ready for tricky questions by gaining a deep understanding of the C#-related topics..
  • Gain an in-depth understanding of the fundamental C# collections..
  • Learn crucial design principles and best coding practices..
  • Learn modern C# concepts: deconstruction, pattern matching and nullable reference types..
  • Two free e-books provided!.
  • Get to know 5 popular design patterns..

Course Content

  • Introduction –> 5 lectures • 10min.
  • What is the difference between Tuples and ValueTuples? –> 1 lecture • 7min.
  • What is the difference between “is” and “as” keywords? –> 1 lecture • 4min.
  • What is the use of the “using” keyword? –> 1 lecture • 7min.
  • What is the purpose of the “dynamic” keyword? –> 1 lecture • 12min.
  • What are expression-bodied members? –> 1 lecture • 8min.
  • What are Funcs and lambda expressions? –> 1 lecture • 10min.
  • What are delegates? –> 1 lecture • 9min.
  • How does the Garbage Collector decide which objects can be removed from memory? –> 1 lecture • 7min.
  • What are generations? –> 1 lecture • 6min.
  • What is the difference between Dispose and Finalize methods? –> 1 lecture • 10min.
  • What are default implementations in interfaces? –> 1 lecture • 9min.
  • What is deconstruction? –> 1 lecture • 6min.
  • Why is “catch(Exception)” almost always a bad idea (and when it is not?)? –> 1 lecture • 7min.
  • What is the difference between “throw” and “throw ex”? –> 1 lecture • 7min.
  • What is the difference between typeof and GetType? –> 1 lecture • 5min.
  • What is reflection? –> 1 lecture • 8min.
  • What are attributes? –> 1 lecture • 10min.
  • What is serialization? –> 1 lecture • 8min.
  • What is pattern matching? –> 1 lecture • 8min.
  • How does the binary number system work? –> 1 lecture • 11min.
  • What is the purpose of the “checked” keyword? –> 1 lecture • 12min.
  • What is the difference between double and decimal? –> 1 lecture • 12min.
  • What is an Array? –> 1 lecture • 8min.
  • What is a List? –> 1 lecture • 12min.
  • What is an ArrayList? –> 1 lecture • 9min.
  • What is the purpose of the GetHashCode method? –> 1 lecture • 14min.
  • What is a Dictionary? –> 1 lecture • 10min.
  • What are indexers? –> 1 lecture • 5min.
  • What is caching? –> 1 lecture • 12min.
  • What are immutable types and what’s their purpose? –> 1 lecture • 12min.
  • What are records and record structs? –> 1 lecture • 9min.
  • Why does string behave like a value type even though it is a reference type? –> 1 lecture • 8min.
  • What is the difference between string and StringBuilder? –> 1 lecture • 7min.
  • What is operator overloading? –> 1 lecture • 9min.
  • What are anonymous types? –> 1 lecture • 9min.
  • What is cohesion? –> 1 lecture • 10min.
  • What‌ ‌is‌ ‌coupling?‌ –> 1 lecture • 9min.
  • What is the Strategy design pattern? –> 1 lecture • 8min.
  • What is the Dependency Injection design pattern? –> 1 lecture • 12min.
  • What is the Template Method design pattern? –> 1 lecture • 9min.
  • What is the Decorator design pattern? –> 1 lecture • 11min.
  • What is the Observer design pattern? –> 1 lecture • 11min.
  • What are events? –> 1 lecture • 13min.
  • What is Inversion of Control? –> 1 lecture • 7min.
  • What‌ ‌is‌ ‌the‌ ‌“composition‌ ‌over‌ ‌ inheritance”‌ ‌principle?‌ –> 1 lecture • 13min.
  • What are mocks? –> 1 lecture • 12min.
  • What‌ ‌are‌ ‌NuGet‌ ‌packages?‌ –> 1 lecture • 7min.
  • What is the difference between Debug and Release builds? –> 1 lecture • 7min.
  • What‌ ‌are‌ ‌preprocessor‌ ‌directives?‌ –> 1 lecture • 7min.
  • What are nullable reference types? –> 1 lecture • 15min.
  • Bonus! –> 1 lecture • 1min.

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Requirements

  • Junior-level knowledge of the C# programming language. Just in case, a free e-book with essential junior-level topics explainations is provided!.

Welcome to the “C#/.NET – 50 Essential Interview Questions (Mid Level)” course! Are you ready to take your knowledge and career to the next level?

 

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100% of my revenue from this course earned in March 2022 will be donated to help Ukraine. I want to support Polish Medical Mission, a humanitarian organization that is currently providing medical assistance in Ukraine.

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I work as a C# Technical Lead and it’s my job to conduct technical interviews with candidates. I will help you gain knowledge and skills that will let you ace your next interview.

 

This course will prepare you for 50 popular C# interview questions. Each topic comes with several bonus questions, so we will learn the answers to 150 questions in total!

 

Check out the free video “What is the difference between string and StringBuilder?” with one of the most common questions from C# interviews!

 

This course is focused on topics that you are most likely to talk about during interviews. We will discuss various subjects, from low-level things like using reflection or “dynamic” keyword, through modern C# subjects like pattern matching or nullable reference types, to high-level matters like design principles and patterns or good coding practices.

 

You will not only learn to give the interviewer the satisfying answer to the question, but you will also gain a deep understanding of those topics, and become a better programmer. So even if you don’t prepare for an interview at this moment, you will strengthen your coding skills and broaden your knowledge.

 

In this course theory and practice come together.  A Git repository is included, and there you can find code for each of the lectures.

 

Although junior-level knowledge is required in this course, don’t worry if you are not quite there yet. A free e-book is provided, and inside it, you will find detailed explanations of 15  junior-level topics you will need to know for this course. Also, another free e-book is included, with all lectures from this course gathered together.

 

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. In other words, you don’t risk anything by purchasing this course. You have nothing to lose, and the knowledge you will gain may take your career to the next level.

 

So, why hesitate? Join me in this course and ace your next interview!

 

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