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Wouldn’t it be ideal if you know what interview questions you could expect at your next job interview? Interview Kickstart can help with just that! This article focuses on Angular interview questions that will help you prepare for your next job interview. Did you know that the same team at Google that made AngularJS actually made the Angular framework, and it has several versions! In fact, Angular 7 was released relatively recently in October of 2018 and supported TypeScript 3.1, Node 10, and RxJS 6.3.
If you are preparing for a tech interview, check out our technical interview checklist, interview questions page, and salary negotiation e-book to get interview-ready! Also, read Angular Interview Questions and Angular 6 Interview Questions for more questions on Angular.
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In this article, we’ll learn:
Let us begin with some sample questions and answers to get an idea of what types of questions can be asked.
1. Why does incremental DOM have a low memory footprint in Angular 7?
Every time we re-render, Virtual DOM creates a tree from scratch. But incremental DOM requires no memory to re-render the view as long as the DOM isn’t changed, and the memory has to be allocated only when the DOM nodes are added or deleted. The size of the memory allocation is also proportional to the size of the change in DOM.
2. Define the Angular TestBed in the context of Angular 7.
The Angular TestBed or ATB is a higher-level testing framework exclusively for Angular, which helps us test behaviors with a dependency on Angular Framework smoothly. It provides a dynamically-constructed Angular test module that emulates an Angular @NgModule.
1. What is Redux in the context of Angular 7?
Redux is a way to manage the application state and improve the maintainability of asynchronicity in our application. It provides a single truth source for the application state and a unidirectional flow of data change.
2. What are the utility functions provided by RxJS in Angular 7?
Some utility functions RxJS library provides that help us create and work with observables are filtering streams, mapping values to different types, creating multiple streams, iterating through the values in a stream, and converting code into observables for async operations.
Take a look at these sample interview questions to assess your preparation level:
1. In the context of Angular 7, define and explain:
2. Differentiate between:
Want to practice more Angular interview questions? Read Angular Interview Questions You Must Prepare for in 2022 to take your prep to the next level.
1. How old is Angular 7?
Angular 7 was released relatively recently in October of 2018. As of December 2021, Angular 13.0 is the latest version of Angular available.
2. Name the main building blocks of an Angular 7 application.
The seven main building blocks of an Angular application are Templates, Component, Dependency Injection, Metadata, Data Binding, Directives, and Services.
3. What’s the difference between Angular 7 and AngularJS?
AngularJS or Angular 1.0:
Angular7, on the other hand, is a complete rewrite of Angular JS and supports:
4. What are some of the best IDEs for Angular 7?
Angular IDE, Webstorm, and Visual Studio Code are some of the best Angular IDEs for Angular 7. Sublime Text, Brackets, and Atom are also good options available as IDEs for Angular 7.
5. How would you update Angular 6 to Angular 7?
Angular 6 can be converted to Angular 7 by using the following command:
ng update @angular/cli @angular/core
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