Common questions for Backend Developers that use dotNet

Lucio Flores
2025-03-05T00:33:28Z

BackendNet.md

📌 C# & Software Development Guide – Topics to Cover

Create a structured guide covering key C# and software development concepts. The guide should be organized into clear sections with concise explanations and real-world examples where applicable. The topics to include are:

1️⃣ Object-Oriented Programming (OOP) in C#

Explanation of OOP and its importance

The four pillars: Encapsulation, Inheritance, Polymorphism, Abstraction (with examples)

Classes and Objects

2️⃣ SOLID Principles

Definition and why they matter in software design

Brief explanation of each principle:

SRP – Single Responsibility Principle

OCP – Open/Closed Principle

LSP – Liskov Substitution Principle

ISP – Interface Segregation Principle

DIP – Dependency Inversion Principle

3️⃣ Constructors in C#

Purpose and types of constructors

10 common FAQs about constructors

4️⃣ Garbage Collection & Memory Management

How C# Garbage Collector works

Difference between Dispose() and Finalize()

Using IDisposable and the using statement

Real-world scenarios (e.g., database connections)

5️⃣ Value Types vs. Reference Types

Differences and behavior in memory

How to pass them as parameters to methods

6️⃣ Database Concepts

What is a database index? (with a real-world analogy)

Table relationships and how they work

Common relational database concepts

7️⃣ Delegates and Predicates in C#

What are delegates and how to use them

Predicates and their role in functional programming

8️⃣ Asynchronous Programming & Threading

Difference between synchronous and asynchronous execution

Task-based async programming (async/await)

Async vs. Threading – When to use each

9️⃣ CI/CD and DevOps Practices

What is Continuous Integration (CI) and Continuous Deployment (CD)?

Benefits of CI/CD in software development

Overview of pipelines in C#

🔟 Security Best Practices for Developers

Secure coding techniques

Protecting sensitive data

Authentication & authorization best practices

1️⃣1️⃣ Azure Cloud Knowledge

What recruiters look for in Azure knowledge

Key Azure services and concepts

Real-world Azure use cases

1️⃣2️⃣ Blazor Framework

Overview of Blazor

Blazor Server vs. Blazor WebAssembly

Why developers should consider using Blazor

1️⃣3️⃣ Generics in C# (<T>)

What are Generics and why use them?

Code examples: Generic classes, methods, collections

1️⃣4️⃣ Dependency Injection in C# (<T>)

What are the different types of DI used in C#?

Explain differences between Singleton, Transient, Scoped

Explain how their instances work together in a single request.

📌 Output Format

Each topic should include:
✅ A short explanation in simple terms.
✅ Key benefits or use cases.
✅ Code examples where applicable.
✅ Real-world analogies to make concepts easier to understand.

This guide should be well-structured, beginner-friendly, and practical, making it useful for developers preparing for interviews or strengthening their understanding of C#. 🚀