10+ BatX Energies Interview Questions and Answers

Managed code is code that is executed by the Common Language Runtime (CLR) while unmanaged code is executed directly by the operating system.

• Managed code is written in languages like C#, VB.NET, and runs in a managed environment like .NET framework.

• Unmanaged code is written in languages like C, C++, and directly interacts with the operating system.

• OOPs pillars are the four main principles of Object-Oriented Programming: Inheritance, Encapsulation, Abstraction, and Polymorphis...read more

SQL injection is a type of attack where malicious SQL statements are inserted into an entry field for execution.

• Use parameterized queries or prepared statements

• Sanitize user input by validating and escaping special characters

• Limit database user privileges

• Use a web application firewall

• Regularly update and patch software

Middleware in ASP.NET Core is software components that are used to handle requests and responses in the application pipeline.

• Middleware components are added to the application pipeline in the Startup class using the UseMiddleware method.

• Each middleware component in the pipeline can inspect, modify, or short-circuit the request or response.

• Middleware components can perform tasks such as authentication, logging, error handling, and more.

• Example: app.UseAuthentication(); app.Use...read more

Life cycle hooks in Angular are functions that allow you to tap into the lifecycle of a component or directive.

• Life cycle hooks are methods that are called at specific points in the life cycle of a component or directive.

• They allow you to perform actions at key points, such as when the component is created, rendered, or destroyed.

• Examples of life cycle hooks include ngOnInit, ngOnChanges, ngOnDestroy, etc.

Normalization in SQL is the process of organizing data in a database to reduce redundancy and improve data integrity.

• Normalization involves breaking down a table into smaller tables and defining relationships between them.

• It helps in reducing data redundancy by storing data in a structured manner.

• There are different normal forms like 1NF, 2NF, 3NF, and BCNF that define the level of normalization.

• Example: If we have a table with customer details and orders, we can normalize it...read more

Optimizing websites involves improving speed, user experience, and search engine ranking.

• Minimize HTTP requests

• Optimize images and videos

• Use caching and compression

• Reduce server response time

• Implement lazy loading

• Use a content delivery network (CDN)

• Optimize code and scripts

• Ensure mobile responsiveness

• Improve website security

• Use structured data for SEO

Dependency Injection is a design pattern where components are given their dependencies rather than creating them internally.

• Allows for easier testing by mocking dependencies

• Promotes loose coupling between components

• Improves code reusability and maintainability

• Example: Constructor injection, Setter injection

Design pattern is a reusable solution to a commonly occurring problem in software design.

• Design patterns help in creating maintainable, scalable, and reusable code.

• They provide a common language for developers to communicate about solutions.

• Examples include Singleton, Factory, Observer, and Strategy patterns.

OOPS stands for Object-Oriented Programming System. It is a programming paradigm based on the concept of objects.

• OOPS focuses on creating objects that contain data and methods to manipulate that data.

• It allows for encapsulation, inheritance, and polymorphism.

• Examples of OOPS languages include Java, C++, and Python.

Promises are objects representing the eventual completion or failure of an asynchronous operation, while async/await is a syntactic sugar for working with promises.

• Promises are used for handling asynchronous operations and provide a way to chain multiple asynchronous operations together.

• Async/await is a newer syntax that makes working with promises easier by allowing you to write asynchronous code that looks synchronous.

• Async functions return a promise, which allows you to us...read more

An interceptor is a software component that intercepts and modifies the behavior of a program or system.

• Interceptors are commonly used in software frameworks to add additional functionality to an application.

• They can be used to intercept and modify incoming or outgoing requests, such as adding authentication or logging.

• Interceptors can also be used to intercept method calls and perform actions before or after the method execution.

• Examples of interceptors include HTTP intercep...read more

Reflection is the ability of a program to examine and modify its own structure and behavior at runtime.

• Allows a program to inspect and modify its own classes, methods, and fields

• Commonly used in frameworks like Spring and Hibernate for configuration and dependency injection

• Can be used to access private fields or methods using Java reflection API

Closure is a function that has access to its own scope, as well as the scope in which it was defined.

• Closure allows a function to access variables from its outer scope even after the outer function has finished executing.

• It helps in maintaining state in functional programming.

• Example: function outerFunction() { let outerVar = 'I am outer'; return function innerFunction() { console.log(outerVar); }; }