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.

1 votes, 3 avg

239

You have 30 minutes to complete the quiz. The timer will start when you click the 'Start Quiz' button. Please ensure you are ready before beginning.

Time is up! Your quiz has ended. Your responses have been submitted automatically.

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. What is Cross-Site Scripting (XSS) in Angular?

A) A vulnerability that allows injecting malicious scripts

B) A type of secure authentication

C) A method to enhance security

D) A debugging tool in Angular

2 / 30

2. What is an alternative way to inject dependencies manually?

A) Using Injector.get(MyService)

B) Using import { MyService }

C) Using new MyService()

D) By modifying the component template

3 / 30

3. What is the default path for the home route?

A) '*'

B) 'home'

C) '/'

D) ''

4 / 30

4. What is the use of patchValue() in Reactive forms?

A) Updates all form controls

B) Clears all form controls

C) Deletes form controls

D) Updates specific form controls

5 / 30

5. Who developed TypeScript?

A) Google

B) Apple

C) Facebook

D) Microsoft

6 / 30

6. What is observe: 'response' used for in an HTTP request?

A) To disable request validation

B) To only get JSON data

C) To observe full HTTP response, including headers

D) To send a GET request

7 / 30

7. What is the singleton pattern in Angular services?

A) Preventing dependency injection

B) Limiting a service to one instance across the application

C) Ensuring multiple instances of a service exist

D) Creating an instance of a service for each component

8 / 30

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

A) It contains project configuration settings

B) It manages backend API calls

C) It is responsible for component styling

D) It defines project dependencies

9 / 30

9. What is the safest HTTP method for authentication?

A) POST

B) DELETE

C) GET

D) PUT

10 / 30

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

A) control.disable()

B) control.readOnly(true)

C) control.deactivate()

D) control.setDisabled(true)

11 / 30

11. What is Angular mainly used for?

A) Database management

B) Mobile app development only

C) Building single-page applications (SPAs)

D) Backend development

12 / 30

12. What does an HTTP interceptor do in Angular?

A) It logs user actions

B) It cancels API requests

C) It initializes API calls

D) It modifies HTTP requests and responses globally

13 / 30

13. What Angular security measure prevents sensitive information exposure?

A) Storing credentials in environment.ts

B) Using environment variables for sensitive data

C) Logging user data in the console

D) Hardcoding API keys in the frontend

14 / 30

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

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

B) { headers: 'application/json' }

C) { contentType: 'json' }

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

15 / 30

15. Which of the following is true about dirty in Angular forms?

A) It is always false

B) It checks if the form is valid

C) It resets the form

D) It becomes true when the form is modified

16 / 30

16. Which Angular lifecycle hook is best for making API calls?

A) ngAfterViewInit()

B) ngOnInit()

C) ngOnDestroy()

D) ngDoCheck()

17 / 30

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

A) HTML, CSS, JavaScript

B) Module, Directive, Pipe

C) Template, Class, Styles

D) Service, Module, Component

18 / 30

18. What type of attack does XSS refer to?

A) SQL Injection

B) Phishing

C) DDoS

D) Cross-Site Scripting

19 / 30

19. How can a service be injected at the component level instead of globally?

A) Use { providedIn: 'root' }

B) Declare it in @NgModule.providers

C) Add it in the providers array of @Component

D) Import it in app.module.ts

20 / 30

20. Which of the following is NOT a valid Angular directive?

A) *ngClass

B) *ngRepeat

C) *ngIf

D) *ngFor

21 / 30

21. Which lifecycle hook is used for cleanup operations?

A) ngOnInit()

B) ngOnChanges()

C) ngOnDestroy()

D) ngAfterViewInit()

22 / 30

22. What is the purpose of the pathMatch: 'full' property in a route?

A) It enables child routes

B) It ensures only exact matches are used for navigation

C) It redirects the user to an external URL

D) It activates lazy loading

23 / 30

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

A) ngOnChanges

B) ngOnInit

C) ngAfterViewInit

D) ngDoCheck

24 / 30

24. Which RxJS operator is used to retry an HTTP request if it fails?

A) catchError()

B) map()

C) retry()

D) delay()

25 / 30

25. What does the never type represent in TypeScript?

A) A function that always returns

B) A variable that can have any value

C) A deprecated feature

D) A function that never returns

26 / 30

26. What does @ViewChild() do in Angular?

A) Manages event listeners in the DOM

B) Passes data from a parent component to a child component

C) Allows a component to access a child component or DOM element

D) Creates a new child component dynamically

27 / 30

27. What is TypeScript?

A) A database query language

B) A superset of JavaScript that adds static typing

C) A replacement for JavaScript

D) A JavaScript framework

28 / 30

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

A) In session storage

B) In a plain text file

C) In local storage

D) In HTTP cookies with HttpOnly and Secure flags

29 / 30

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

A) "5"

B) 5

C) Error

D) NaN

30 / 30

30. Which module must be imported to enable routing in Angular?

A) @angular/router

B) @angular/core

C) @angular/common

D) @angular/forms

Your score is

The average score is 60%

Rate Your Experience!

Anonymous feedback

Thank you for your feedback! We appreciate your input.

10 Minutes JavaScript Quiz Test Online

10 Minutes SQL Quiz Test Online

SQL Quiz Test Online (30 random Questions)

10 Minutes HTML Quiz Test Online

10 Minutes CSS Quiz Test Online

Online Quiz Test (with time limit)

Related