Greenovative Energy Interview Questions and Answers

A table must be created using Angular Material or another UI library to demonstrate CRUD operations.

Q1. Angular performance questions? Which one is faster react or angular?
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Q2. Angular Services how to implement it ?
Ans. 
Angular services are used to create reusable code that can be shared across components.
• Create a service using the Angular CLI command 'ng generate service serviceName'

• Inject the service into components by adding it to the providers array in the component's metadata

• Services can be used to share data between components, perform HTTP requests, or handle business logic

• Services are singleton instances, meaning there is only...read more
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Q3. What are the methods for communication between components in Angular? Please elaborate.
Ans. 
Methods for communication between components in Angular include Input and Output properties, ViewChild, Services, and EventEmitters.
• Using Input and Output properties to pass data from parent to child components and emit events from child to parent components.

• Using ViewChild to access child components and their properties directly from the parent component.

• Using Services to create a shared service that can be injected i...read more
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Basic Aptitude questions testing logic

Q1. Questions about SQL
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Q2. Questions about Python
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It was good and simple test

Took me 1 hour to complete and anther 1 hour for explanation and Q/A

Q1. About my family and why i don't want to work in foreign country
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Q2. My expectation on salary
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Q3. Long term goal regarding my career
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There was a machine test organised as the 1st round of the interview process. The machine test was on Angular

Q1. Throw some light on the new angular feature that doesn't use @NgModule
Ans. 
The new Angular feature that doesn't use @NgModule is called Ivy.
• Ivy is the new rendering engine in Angular that doesn't rely on @NgModule for compilation.

• It allows for faster compilation times and smaller bundle sizes.

• Ivy enables features like improved tree shaking and better debugging capabilities.

• Example: Angular 9 introduced Ivy as the default rendering engine.
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Q2. How would the application work without @NgModule
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The application would not work properly without @NgModule as it is required to bootstrap the application and configure dependencies.
• Without @NgModule, the application would not be able to bootstrap and start properly.

• NgModule is used to configure dependencies, such as components, directives, and services.

• NgModule also helps in organizing the application into modules for better maintainability and reusability.
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Q3. Mid level Angular interview questions
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Q4. What are types of directives in angular
Ans. 
Types of directives in Angular include structural directives, attribute directives, and component directives.
• Structural directives are used to add or remove elements from the DOM based on conditions (e.g. *ngIf, *ngFor)

• Attribute directives are used to change the appearance or behavior of an element (e.g. ngStyle, ngClass)

• Component directives are custom directives that are components themselves (e.g. @Component)
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Q5. Can a service file have more than one instance? If yes how?
Ans. 
Yes, a service file can have more than one instance by creating multiple instances of the service class.
• Multiple instances of a service class can be created by instantiating the class multiple times.

• Each instance will have its own state and can be used independently.

• This can be useful for scenarios where multiple instances of the same service are needed to handle different tasks.
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Q6. What are pipes in angular?
Ans. 
Pipes in Angular are used for transforming data in templates.
• Pipes are used to format data before displaying it in the view.

• They can be used to filter, sort, or transform data in various ways.

• Examples include currency, date, uppercase, and lowercase pipes.
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Q1. How to make an application scalable?
Ans. 
To make an application scalable, consider using cloud services, optimizing database queries, caching frequently accessed data, and using microservices architecture.
• Utilize cloud services like AWS or Azure for scalability on demand

• Optimize database queries to improve performance

• Implement caching mechanisms for frequently accessed data to reduce load on servers

• Use microservices architecture to break down the application ...read more
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Q2. Interview questions based on architecture of project and less of technical aspects
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Q1. Salary negotiation, polices discussion, company norms and some basic HR questions.
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