Hiring guide for A# .NET version2.1 Engineers

A# .NET version2.1 Developer Hiring Guide

A# .NET version 2.1 is a computer software programming language that was first introduced in 2002. It is a derivative of the C# programming language and is designed to be used with the Microsoft .NET Framework. A# .NET version 2.1 is a statically typed language, which means that variables must be declared before they can be used. It also supports object-oriented programming, which allows programmers to create complex programs by grouping together related data and functions. A# .NET version 2.1 is used in a variety of applications, including web development, mobile development, and desktop applications. Sources: * [A# .NET version 2.1 on Wikipedia](https://en.wikipedia.org/wiki/A%23_.NET_version_2.1) * [The A# Programming Language on Microsoft Docs](https://docs.microsoft.com/en-us/dotnet/csharp/)

Ask the right questions secure the right A# .NET version2.1 talent among an increasingly shrinking pool of talent.

First 20 minutes

General A# .NET version2.1 app knowledge and experience

The first 20 minutes of the interview should seek to understand the candidate's general background in A# .NET version2.1 application development, including their experience with various programming languages, databases, and their approach to designing scalable and maintainable systems.

What are the key features of A# .NET version2.1?
Key features include cross-platform support, microservices, container support, high performance, asynchronous programming model, unified MVC & Web API frameworks, multiple environments and development mode.
How would you handle exceptions in A# .NET version2.1?
I would use try-catch blocks to handle exceptions. I would also use the 'finally' block to ensure that the necessary cleanup is always performed, regardless of how the program exits the try block.
Describe the difference between Task and Thread in A# .NET version2.1.
A Thread is a basic unit of CPU utilization, it includes a program counter, a stack, and a set of registers. A Task represents an asynchronous operation and is a higher-level way of representing multithreaded work.
What is Dependency Injection in A# .NET version2.1 and how would you implement it?
Dependency Injection is a design pattern that allows us to eliminate hard-coded dependencies and make our applications loosely coupled, extendable and maintainable. We can implement it by using interfaces and classes that implement these interfaces.
What are the different types of filters in A# .NET version2.1?
There are five types of filters in A# .NET version2.1: Authorization filters, Resource filters, Action filters, Exception filters, and Result filters.
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What you’re looking for early on

Does the candidate have a solid understanding of A# .NET version2.1?
Has the candidate demonstrated problem-solving skills?
Is the candidate able to communicate effectively?
Does the candidate have experience with similar projects or tasks?

Next 20 minutes

Specific A# .NET version2.1 development questions

The next 20 minutes of the interview should focus on the candidate's expertise with specific backend frameworks, their understanding of RESTful APIs, and their experience in handling data storage and retrieval efficiently.

How would you implement caching in A# .NET version2.1?
Caching can be implemented in A# .NET version2.1 using the IMemoryCache interface. This provides a fast, in-memory cache that can be used to store and retrieve data.
What is the role of the 'wwwroot' folder in A# .NET version2.1?
'wwwroot' folder in A# .NET version2.1 is the web root path or the content root path of the application. It is the root directory from which static content is served.
Describe the difference between Singleton and Scoped service lifetimes in A# .NET version2.1.
Singleton services are created the first time they're requested and then every subsequent request will use the same instance. Scoped services are created once per client request (connection).
How would you handle multiple environments in A# .NET version2.1?
A# .NET version2.1 provides built-in support for managing different environments through the IHostingEnvironment service. This allows us to write code that can behave differently in development, staging, and production environments.
What are Tag Helpers in A# .NET version2.1 and how would you use them?
Tag Helpers enable server-side code to participate in creating and rendering HTML elements in Razor files. They can be used to create custom tags or modify the behavior of existing tags.
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The ideal back-end app developer

What you’re looking to see on the A# .NET version2.1 engineer at this point.

At this point, a skilled A# .NET version2.1 engineer should demonstrate strong problem-solving abilities, proficiency in A# .NET version2.1 programming language, and knowledge of software development methodologies. Red flags include lack of hands-on experience, inability to articulate complex concepts, or unfamiliarity with standard coding practices.

Digging deeper

Code questions

These will help you see the candidate's real-world development capabilities with A# .NET version2.1.

What does the following simple A# .NET code do?
Console.WriteLine("Hello, World!");
This code prints the string 'Hello, World!' to the console.
What does the following A# .NET code do?
string s = "Hello, World!";
string t = s.Substring(7, 5);
This code creates a new string t that contains the substring of s starting at the 7th index and of length 5. So, t will be 'World'.
What does the following A# .NET code do?
List numbers = new List { 1, 2, 3, 4, 5 };
numbers.RemoveRange(1, 3);
This code creates a list of integers, then removes three elements starting from the element at index 1. So, the resulting list will be { 1, 5 }.
What does the following A# .NET code do?
Thread t = new Thread(() => {
  Console.WriteLine("Hello, World!");
This code creates a new thread that prints 'Hello, World!' to the console, then starts the thread.

Wrap-up questions

Final candidate for A# .NET version2.1 Developer role questions

The final few questions should evaluate the candidate's teamwork, communication, and problem-solving skills. Additionally, assess their knowledge of microservices architecture, serverless computing, and how they handle A# .NET version2.1 application deployments. Inquire about their experience in handling system failures and their approach to debugging and troubleshooting.

Describe the difference between Razor Pages and MVC in A# .NET version2.1.
Razor Pages is a page-based programming model that makes building web UI easier and more productive. MVC is a design pattern that separates an application into three main aspects: Model, View, and Controller.
How would you implement authentication in A# .NET version2.1?
Authentication in A# .NET version2.1 can be implemented using the built-in Identity system, which includes support for OAuth 2.0, OpenID Connect, and other authentication mechanisms.
What is Middleware in A# .NET version2.1 and how would you use it?
Middleware is software that's assembled into an app pipeline to handle requests and responses. It can be used for exception handling, authentication, routing, session state, and more.

A# .NET version2.1 application related

Product Perfect's A# .NET version2.1 development capabilities

Beyond hiring for your A# .NET version2.1 engineering team, you may be in the market for additional help. Product Perfect provides seasoned expertise in A# .NET version2.1 projects, and can engage in multiple capacities.