Icertis Interview Questions for .NET - A Complete Guide with Detailed Answers

Icertis is a pioneering company in the contract lifecycle management (CLM) space, providing enterprises with a platform to manage contracts efficiently. Their Icertis Contract Management (ICM) platform is built on cutting-edge technologies like .NET, Azure, and AI/ML, enabling businesses to streamline contract processes, reduce risks, and improve compliance. As a .NET developer, understanding Icertis’s tech stack and the role of .NET in their ecosystem is crucial for your interview preparation.

Guide to Icertis .NET Interview Questions

1. Core .NET Concepts

a) .NET Fundamentals

1. What is the .NET Framework? How is it different from .NET Core and .NET 5/6/7?

   • Answer:

     • .NET Framework:

       • Windows-only platform.

       • Includes a large class library called the Framework Class Library (FCL).

       • Relies on the Common Language Runtime (CLR) for execution.

     • .NET Core:

       • Cross-platform, open-source framework.

       • Lightweight, modular, and supports Windows, Linux, and macOS.

     • .NET 5/6/7:

       • Unified successor to .NET Framework and .NET Core.

       • Combines the best features of both.

       • Supports cross-platform development and modern application needs.

2. Explain the Common Language Runtime (CLR).

   • Answer:

     • The CLR is the execution engine of .NET.

     • Manages memory, handles exceptions, and enforces security.

     • Converts Intermediate Language (IL) code into machine code.

     • Provides services like garbage collection and threading.

3. What is Managed Code vs. Unmanaged Code?

   • Answer:

     • Managed Code:

       • Executed by the CLR.

       • Benefits from features like garbage collection and type safety.

       • Written in languages like C# or VB.NET.

     • Unmanaged Code:

       • Runs outside the CLR.

       • Typically written in languages like C++.

       • Requires manual memory management.

4. What are Assemblies in .NET?

   • Answer:

     • Assemblies are compiled code libraries used in .NET applications.

     • Can be DLLs (Dynamic Link Libraries) or EXEs (Executables).

     • Contains metadata, IL code, and resources.

     • Enable versioning, security, and deployment.

b) C# Programming

1. Explain OOP concepts (e.g., inheritance, polymorphism, encapsulation, abstraction).

   • Answer:

     • Inheritance:

       • A class inherits properties and methods from another class.

       • Promotes code reusability.

     • Polymorphism:

       • Methods can take multiple forms (e.g., method overriding).

       • Enables flexibility in design.

     • Encapsulation:

       • Hiding internal details and exposing only necessary features.

       • Achieved using access modifiers like private, public, and protected.

     • Abstraction:

       • Simplifying complex systems by modeling classes.

       • Achieved using abstract classes and interfaces.

2. What are Delegates and Events?

   • Answer:

     • Delegates:

       • Type-safe function pointers.

       • Used to pass methods as arguments.

     • Events:

       • Mechanisms for communication between objects.

       • Built on top of delegates.

3. Difference between Abstract Class and Interface.

   • Answer:

     • Abstract Class:

       • Can have both implemented and unimplemented methods.

       • Supports constructors and fields.

       • A class can inherit only one abstract class.

     • Interface:

       • Can only declare methods (no implementation).

       • Does not support constructors or fields.

       • A class can implement multiple interfaces.

4. What is the difference between Value Types and Reference Types?

   • Answer:

     • Value Types:

       • Store data directly (e.g., int, struct).

       • Allocated on the stack.

       • Faster access but limited in size.

     • Reference Types:

       • Store a reference to the data (e.g., class, string).

       • Allocated on the heap.

       • Slower access but can handle larger data.

5. Explain Async/Await and Task Parallel Library (TPL).

   • Answer:

     • Async/Await:

       • Simplifies asynchronous programming.

       • Allows non-blocking execution of tasks.

       • Example:

          

         public async Task<string> GetDataAsync() {
             var data = await FetchDataFromAPI();
             return data;
         }

     • Task Parallel Library (TPL):

       • Provides APIs for parallel programming.

       • Includes features like Parallel.For and Task.

       • Example:

          

         Parallel.For(0, 10, i => {
             Console.WriteLine(i);
         });

c) ASP.NET Core

1. What is Middleware in ASP.NET Core?

   • Answer:

     • Middleware:

       • Components that handle requests and responses in the ASP.NET Core pipeline.

       • Examples: Authentication, logging, and error handling.

       • Configured in the Startup.cs file using app.UseMiddleware().

2. Explain Dependency Injection (DI) in .NET.

   • Answer:

     • Dependency Injection:

       • Design pattern for achieving Inversion of Control (IoC).

       • Services are injected into classes rather than being created internally.

       • Example:

          

         public class MyService {
             private readonly ILogger _logger;
             public MyService(ILogger logger) {
                 _logger = logger;
             }
         }

3. How does Routing work in ASP.NET Core?

   • Answer:

     • Routing:

       • Maps incoming HTTP requests to controller actions.

       • Configured using app.UseEndpoints() in the Startup.cs file.

       • Example:

          

         app.UseEndpoints(endpoints => {
             endpoints.MapControllerRoute(
                 name: "default",
                 pattern: "{controller=Home}/{action=Index}/{id?}");
         });