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. How do you handle API pagination in Angular?

A) Using pageToken in headers

B) Using paginationService

C) Using queryParams

D) Using serverPagination module

2 / 30

2. What is an effect in NgRx?

A) A component lifecycle hook

B) A service that handles side effects like API calls

C) A method to modify the UI

D) A state variable

3 / 30

3. What is the main file responsible for bootstrapping an Angular application?

A) index.html

B) app.module.ts

C) angular.json

D) main.ts

4 / 30

4. What is the role of an Injector in Angular?

A) It is responsible for module configuration

B) It renders templates dynamically

C) It handles the service creation and dependency injection

D) It compiles Angular components

5 / 30

5. What is the purpose of TypeScript's namespace?

A) To define functions

B) To create a module-like structure for code organization

C) To declare variables

D) To handle exceptions

6 / 30

6. What does HttpOnly in cookies do?

A) Enables real-time data binding

B) Prevents JavaScript from accessing cookies

C) Allows JavaScript to access cookies

D) Blocks Angular services

7 / 30

7. What is the best way to prevent brute-force attacks in Angular authentication?

A) Using a single static password

B) Storing passwords in plaintext

C) Allowing unlimited login attempts

D) Rate limiting login attempts

8 / 30

8. Who developed TypeScript?

A) Apple

B) Facebook

C) Google

D) Microsoft

9 / 30

9. What is Type Inference in TypeScript?

A) Manually defining types for variables

B) A debugging feature

C) Allowing TypeScript to automatically determine the type

D) A process for converting TypeScript to JavaScript

10 / 30

10. What is the role of asyncValidators in Angular forms?

A) They perform asynchronous validation, like checking unique usernames

B) They perform synchronous validation

C) They reset the form

D) They disable validation temporarily

11 / 30

11. What is the main purpose of an Angular module?

A) To group related components, directives, and services

B) To manage component lifecycles

C) To store API response data

D) To define global CSS styles

12 / 30

12. What does the never type represent in TypeScript?

A) A variable that can have any value

B) A function that never returns

C) A deprecated feature

D) A function that always returns

13 / 30

13. How do you cancel an ongoing HTTP request in Angular?

A) By calling httpClient.cancel()

B) By using AbortController

C) By setting { cancel: true } in headers

D) By using unsubscribe()

14 / 30

14. How do you disable a form control in Reactive forms?

A) control.disable()

B) control.readOnly(true)

C) control.deactivate()

D) control.setDisabled(true)

15 / 30

15. Which lifecycle hook is useful for initializing form data in a component?

A) ngOnChanges

B) ngOnInit

C) ngAfterViewInit

D) ngDoCheck

16 / 30

16. How do you define routes in Angular?

A) Using a components.json file

B) Using a Routes array

C) Using a router.config.ts file

D) Using the ngRoute module

17 / 30

17. Which directive is used to create a form in Template-driven forms?

A) formGroup

B) ngForm

C) ngSubmit

D) formControl

18 / 30

18. How can you send JSON data in a POST request in Angular?

A) { headers: { 'Content-Type': 'application/json' } }

B) { body: JSON.stringify(data) }

C) { headers: 'application/json' }

D) { contentType: 'json' }

19 / 30

19. What is the output of console.log(10 / "2") in TypeScript?

A) "5"

B) Error

C) NaN

D) 5

20 / 30

20. What are the three main parts of an Angular component?

A) Template, Class, Styles

B) Module, Directive, Pipe

C) Service, Module, Component

D) HTML, CSS, JavaScript

21 / 30

21. Which Angular lifecycle hook is called only once when the component is created?

A) ngOnInit()

B) ngOnDestroy()

C) ngOnChanges()

D) ngAfterViewInit()

22 / 30

22. How can you set global headers for all HTTP requests in Angular?

A) Using globalHeadersService

B) Using HttpInterceptor

C) Using HttpHeaders inside each request

D) Using requestOptions

23 / 30

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

A) Defines Angular modules

B) Manages API calls

C) Stores configuration settings for an Angular project

D) Handles user authentication

24 / 30

24. How do you explicitly specify a return type of void in TypeScript?

A) function example() -> void {}

B) function example(): undefined {}

C) function example(): void {}

D) function example() { return void; }

25 / 30

25. What does the routerLink directive do?

A) Defines the router configuration

B) Navigates between routes in templates

C) Calls an API

D) Handles data fetching

26 / 30

26. What is the main advantage of using Angular?

A) Two-way data binding

B) No need for a server

C) Uses only JavaScript

D) Automatic database integration

27 / 30

27. What does on() do inside a reducer in NgRx?

A) Defines how actions affect state

B) Configures the NgRx store

C) Handles HTTP requests

D) Binds effects to reducers

28 / 30

28. What command is used to create a new Angular project using Angular CLI?

A) ng create project-name

B) ng new project-name

C) angular new project-name

D) ng start project-name

29 / 30

29. How do you enable strict type checking in TypeScript?

A) By using the --strict flag when compiling

B) By setting "strict": true in tsconfig.json

C) TypeScript does not support strict checking

D) Both A and B

30 / 30

30. How do you check if a form control is valid?

A) formControl.valid

B) formControl.validState

C) formControl.status

D) formControl.invalid

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