Hiring guide for ASP Engineers

ASP Developer Hiring Guide

ASP, or Active Server Pages, is a server-side scripting language developed by Microsoft in the late 1990s. It was initially released as a component of the Internet Information Services (IIS) web server and was designed to build dynamic websites, applications, and services. ASP uses VBScript or JScript as its default programming languages but also supports other .NET languages like C# and Visual Basic.NET. The language has evolved over time into ASP.NET which offers improved performance and enhanced features for web development. This information is sourced from Microsoft's official documentation on ASP technology.

Ask the right questions secure the right ASP talent among an increasingly shrinking pool of talent.

First 20 minutes

General ASP app knowledge and experience

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

How would you explain the role of an ASP.NET developer?
An ASP.NET developer is responsible for designing, implementing and maintaining web applications using the .NET programming framework. They work with business analysts to understand the business requirements and design the application accordingly. They also write code, debug issues, perform testing, and ensure that the application meets all the functional requirements.
What are the main components of .NET framework?
The main components of .NET framework are Common Language Runtime (CLR), .NET Framework Class Library, and ASP.NET.
Describe the difference between ASP and ASP.NET.
ASP is a server-side scripting language, while ASP.NET is a web application framework. ASP.NET allows for programming code to be written in various .NET languages like C# and VB.NET, while ASP uses VBScript or JScript. ASP.NET has better language support, a large set of user controls, XML-based components, and user authentication, with better performance than classic ASP.
What is the role of CLR in ASP.NET?
CLR stands for Common Language Runtime and it forms the heart of the .NET framework. It is responsible for managing the execution of .NET programs regardless of any .NET programming language. It provides various services such as memory management, thread management, security management, code verification, compilation, and other system services.
How would you handle exceptions in ASP.NET?
In ASP.NET, exceptions can be handled by using try-catch-finally blocks. The try block contains the code that might throw an exception, the catch block handles the exception if one is thrown, and the finally block contains code that is always executed, regardless of whether an exception is thrown or not.
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What you’re looking for early on

Does the candidate have a solid understanding of ASP.NET framework?
Can the candidate effectively communicate their thoughts and ideas?
Has the candidate demonstrated problem-solving skills?
Is the candidate familiar with the principles of software design and development?

Next 20 minutes

Specific ASP 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.

What is the difference between a DataReader and a DataSet in ADO.NET?
DataReader is a forward-only, read-only cursor that is used to read data from a database, whereas DataSet is an in-memory representation of a collection of Database objects that includes tables, relations, and constraints. DataReader is faster and more efficient for situations where you need to quickly loop through the results. DataSet provides more flexibility by allowing random access to data.
How would you implement caching in ASP.NET?
Caching in ASP.NET can be implemented using the Cache object. The Cache object allows you to store data that can be globally accessed within the application. It is primarily used to store data that is expensive to create.
What are HTTP Handlers and HTTP Modules?
HTTP Handlers are the .NET components that implement the System.Web.IHttpHandler interface and are used to handle individual HTTP requests. HTTP Modules are .NET components that implement the System.Web.IHttpModule interface and are used to handle application level events.
How would you secure an ASP.NET application?
Securing an ASP.NET application can be done in several ways. Some of the most common methods include using Windows authentication, forms authentication, and authorizing users based on their roles. It's also important to validate user input to protect against SQL injection attacks, and to use secure communication protocols like HTTPS.
What is the difference between early binding and late binding?
Early binding refers to assignment of values to variables during design time, while late binding refers to assignment of values to variables during runtime. Early binding is faster but doesn't support polymorphism. Late binding supports polymorphism but is slower.
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The ideal back-end app developer

What you’re looking to see on the ASP engineer at this point.

At this point, a skilled ASP engineer should demonstrate strong problem-solving abilities, proficiency in ASP 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 ASP.

What does this simple ASP.NET code do?
public class HelloWorld
public string Get()
return "Hello, World!";
This code defines a class named 'HelloWorld' with a method 'Get' that returns the string 'Hello, World!'.
What does this ASP.NET code snippet do?
public class HomeController : Controller
public IActionResult Index()
return View();
This code defines a HomeController class that inherits from the Controller base class. It has an Index method that returns a View.
What will be the output of this ASP.NET code snippet?
List numbers = new List { 1, 2, 3, 4, 5 };
numbers.RemoveRange(0, 3);
foreach (int i in numbers)
This code will output '45'. It creates a list of integers, removes the first three elements, and then prints the remaining elements.
What does this ASP.NET code snippet do?
public class Worker
public async Task DoWork()
await Task.Delay(5000);
Console.WriteLine("Work Done");
This code defines a Worker class with an asynchronous method 'DoWork'. The method waits for 5 seconds (without blocking the thread) and then prints 'Work Done'.

Wrap-up questions

Final candidate for ASP 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 ASP application deployments. Inquire about their experience in handling system failures and their approach to debugging and troubleshooting.

What are the different types of validation controls in ASP.NET?
ASP.NET provides several types of validation controls, including RequiredFieldValidator, CompareValidator, RangeValidator, RegularExpressionValidator, CustomValidator, and ValidationSummary.
How would you implement a secure login process in ASP.NET?
A secure login process in ASP.NET can be implemented by using forms authentication. The user's credentials are collected via a form and then encrypted and sent to the server. The server then validates these credentials against a data source and if valid, issues a cookie to the user. The user's browser then includes this cookie in all subsequent requests to the server.
What is the difference between Server.Transfer and Response.Redirect?
Server.Transfer transfers from one page to another on the server side without making a round trip back to the client's browser. This provides a faster response with a little less overhead on the server. Response.Redirect is used to redirect the user's browser to another page or site. It performs trip in the client's browser, but it can be used for both internal and external redirection.

ASP application related

Product Perfect's ASP development capabilities

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