Angular Quiz Test Online (30 random Questions) 2026

This quick 30-minute challenge consists of 30 random multiple-choice questions designed to test your knowledge across various Angular topics, including the introduction to Angular, TypeScript basics, project structure and fundamentals, components and communication, services and dependency injection, routing and navigation, forms in Angular, HTTP and API integration, state management with RxJS and NgRx, as well as authentication and security practices. Whether you’re just starting or looking to deepen your expertise, this quiz will enhance your understanding of Angular’s framework and best practices.

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30 Minutes Angular Quiz Test Online

Welcome to the Angular Quiz! This quick 30-minute challenge consists of 30 random multiple-choice questions designed to test your knowledge across various Angular topics, including the introduction to Angular, TypeScript basics, project structure and fundamentals, components and communication, services and dependency injection, routing and navigation, forms in Angular, HTTP and API integration, state management with RxJS and NgRx, as well as authentication and security practices. Whether you're just starting or looking to deepen your expertise, this quiz will enhance your understanding of Angular's framework and best practices.

1 / 30

1. Who developed TypeScript?

A) Facebook

B) Apple

C) Microsoft

D) Google

2 / 30

2. What is the purpose of params in route configuration?

A) To create child routes

B) To fetch API data

C) To pass dynamic values in a route

D) To define default routes

3 / 30

3. What does updateValueAndValidity() do in Angular forms?

A) Clears all form errors

B) Disables all validations

C) Resets the form to its default state

D) Updates the form value and revalidates it

4 / 30

4. What is TypeScript?

A) A replacement for JavaScript

B) A superset of JavaScript that adds static typing

C) A JavaScript framework

D) A database query language

5 / 30

5. Which Angular feature helps reduce the initial JavaScript bundle size?

A) Service Workers

B) Lazy Loading

C) Minification

D) Webpack

6 / 30

6. How does Angular inject dependencies?

A) Using a centralized configuration file

B) By manually creating instances in components

C) By hardcoding dependencies

D) Automatically using constructors and decorators

7 / 30

7. What is the purpose of the tsconfig.json file in an Angular project?

A) It manages Angular routing

B) It defines TypeScript configuration settings

C) It contains project dependencies

D) It is used to write unit tests

8 / 30

8. What symbol is used to separate query parameters in a URL?

A) /

B) ?

C) &

D) #

9 / 30

9. What is the purpose of RouterModule in Angular?

A) To communicate with backend servers

B) To handle application routing

C) To manage component styles

D) To store application data

10 / 30

10. What does OpenID Connect add to OAuth 2.0?

A) Encryption

B) Authentication

C) Authorization

D) Security

11 / 30

11. What is the purpose of the selector property in a component?

A) To set component styles

B) To bind the component to a module

C) To define the name of the component class

D) To specify how the component is referenced in templates

12 / 30

12. What does the routerLink directive do?

A) Navigates between routes in templates

B) Handles data fetching

C) Defines the router configuration

D) Calls an API

13 / 30

13. Which module is required to make HTTP requests in Angular?

A) HttpClientModule

B) HttpModule

C) FormsModule

D) CommonModule

14 / 30

14. Which of the following is NOT a reason to use services in Angular?

A) To share data between components

B) To fetch and manage data

C) To increase memory usage

D) To store reusable logic

15 / 30

15. Where should services be provided in Angular?

A) Only in components

B) Only in app.module.ts

C) In main.ts

D) In @NgModule or @Component using providedIn

16 / 30

16. How do you select data from the NgRx store?

A) Using store.getState()

B) Using store.dispatch()

C) Using store.select()

D) Using store.reduce()

17 / 30

17. What happens if you use @Input() in a parent component?

A) The child component will receive data

B) The application will crash

C) It has no effect

D) The parent component will receive data

18 / 30

18. Which Angular feature is used to restrict access to certain routes?

A) Services

B) Components

C) Directives

D) Route Guards

19 / 30

19. What will happen if you manually create a new service instance inside a component?

A) It creates multiple instances, breaking singleton behavior

B) It improves service sharing

C) It has no impact

D) It optimizes performance

20 / 30

20. Which method is best for sending large files to a server?

A) http.delete()

B) http.put() with JSON

C) http.post() with FormData

D) http.get()

21 / 30

21. What is lazy loading in Angular routing?

A) Loading routes based on user permissions

B) Loading JavaScript files dynamically

C) Loading components only when needed

D) Caching API responses

22 / 30

22. Which directive disables a form control?

A) [disabled]

B) disableControl

C) disable

D) formControl.disable()

23 / 30

23. Which of the following is NOT a valid way to share data between Angular components?

A) Using @Input()

B) Using @Output()

C) Using a shared service

D) Using local storage

24 / 30

24. What is Dependency Injection (DI) in Angular?

A) A design pattern to manage dependencies in a class

B) A function that manages component state

C) A tool for debugging Angular applications

D) A method to directly access the database

25 / 30

25. What is the purpose of polyfills.ts in an Angular project?

A) It is used for database connectivity

B) It handles Angular animations

C) It provides compatibility with older browsers

D) It defines API endpoints

26 / 30

26. What is the default command to open an Angular project in a browser after serving?

A) ng serve --open

B) npm start

C) ng start

D) ng open

27 / 30

27. Where should you store a JWT token in an Angular application for security reasons?

A) In HTTP cookies with HttpOnly and Secure flags

B) In a plain text file

C) In session storage

D) In local storage

28 / 30

28. How do you apply validation in Template-driven forms?

A) Using formValidate() function

B) Forms in Angular do not support validation

C) Using validation directives in the template

D) Using Angular Validators in TypeScript

29 / 30

29. What is the purpose of the angular.json file?

A) It defines project dependencies

B) It is responsible for component styling

C) It manages backend API calls

D) It contains project configuration settings

30 / 30

30. How do you define routes in Angular?

A) Using a router.config.ts file

B) Using a Routes array

C) Using the ngRoute module

D) Using a components.json file

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