10+ Indocopters Interview Questions and Answers

Constructor is a special method that is used to initialize objects in a class.

• Constructors have the same name as the class and do not have a return type.

• Types of constructors include default, parameterized, copy, and static constructors.

• Default constructors are automatically created by the compiler if no constructor is defined.

• Parameterized constructors take arguments to initialize object properties.

• Copy constructors create a new object with the same values as an existing obj...read more

The main difference between .NET and .NET Core is that .NET Core is a cross-platform, open-source framework while .NET is a Windows-only framework.

• NET Core is cross-platform and can run on Windows, macOS, and Linux, while .NET is primarily for Windows.

• .NET Core is open-source and community-driven, while .NET is developed by Microsoft.

• .NET Core is modular and lightweight, allowing developers to include only the necessary components in their applications, while .NET has a large...read more

Dispose is used to release unmanaged resources immediately, while finalize is used for cleanup before an object is destroyed.

• Dispose is called explicitly by the developer, while finalize is called by the garbage collector.

• Dispose is typically used for releasing unmanaged resources like file handles or database connections.

• Finalize is used for cleanup tasks like closing files or releasing memory.

• Implement IDisposable interface for Dispose method, and override Finalize method f...read more

A stored procedure is a pre-written program that can be called by other programs or applications.

• Stored procedures are used to improve performance and security.

• They can be used to perform complex operations on a database.

• They can be called from within other programs or applications.

• They can be written in various programming languages such as SQL, PL/SQL, T-SQL, etc.

• Examples include procedures for inserting, updating, and deleting data from a database.

The question is asking the candidate to explain a program concept.

• Explain the high-level purpose of the program

• Describe the key components or modules of the program

• Discuss any algorithms or data structures used in the program

useState is a hook in React that allows functional components to have state.

• useState is used to add state to functional components in React.

• It returns an array with two elements - the current state value and a function to update that value.

• Example: const [count, setCount] = useState(0);

JSX is a syntax extension for JavaScript that allows writing HTML-like code within JavaScript. Babel is a tool used to transpile JSX code into plain JavaScript.

• JSX stands for JavaScript XML and is used to write HTML-like code in React components

• Babel is a JavaScript compiler that converts JSX code into plain JavaScript for browser compatibility

• JSX allows developers to write UI components in a more declarative and readable way

• Example:

  Hello, World!
  in JSX gets transpiled to Re...read more

Hooks are functions that let you use state and other React features without writing a class.

• Hooks are introduced in React 16.8.

• They allow you to use state and other React features in functional components.

• Some commonly used hooks are useState, useEffect, useContext, and useReducer.

• Hooks help in reusing logic across components and making code more readable.

• Example: useState hook is used to add state to functional components.

Async and await are keywords in C# used for asynchronous programming to improve performance and responsiveness.

• Async is used to define a method as asynchronous, allowing it to run concurrently with other code.

• Await is used to pause the execution of an async method until a task is complete, without blocking the thread.

• Async and await are commonly used in tasks like network requests, file I/O, and database operations.

• Example: async Task GetDataAsync() { await Task.Delay(1000); ...read more

Stored procedure is a precompiled collection of SQL statements that can be executed by calling the procedure name.

• Stored procedures help improve performance by reducing network traffic and improving security.

• They can be used to encapsulate business logic and promote code reusability.

• Stored procedures can accept input parameters and return output parameters or result sets.

• Examples: sp_GetEmployeeDetails, sp_InsertOrder

MVC Life Cycle refers to the sequence of events that occur during the processing of an HTTP request in an MVC application.

• 1. Routing: Determines which controller and action method to call based on the URL.

• 2. Controller Initialization: Creates an instance of the controller and calls the action method.

• 3. Action Execution: Executes the logic defined in the action method.

• 4. Result Execution: Renders the view and returns the response to the client.

• 5. Dispose: Releases any resource...read more

Transit refers to the act of moving goods or people from one place to another, typically using public transportation systems.

• Transit can include various modes of transportation such as buses, trains, subways, and ferries.

• Transit systems are designed to efficiently transport large numbers of people within urban areas.

• Examples of transit systems include the New York City Subway, London Underground, and Tokyo Metro.

Middleware is software that acts as a bridge between different applications or systems, allowing them to communicate and share data.

• Middleware helps in integrating different software components and systems together.

• It provides a layer of abstraction for communication between applications.

• Examples of middleware include message brokers like RabbitMQ, web servers like Apache Tomcat, and API gateways like Kong.

JSX is a syntax extension for JavaScript that allows writing HTML-like code in React applications.

• JSX stands for JavaScript XML

• It allows developers to write HTML-like code directly in their JavaScript files

• JSX gets transpiled into regular JavaScript by tools like Babel before being rendered by the browser

Create a simple counter function in Reactjs.

• Create a state variable to store the count value.

• Use setState to update the count value.

• Render the count value in the component.