Angular Basics

1/25 In Angular, you can pass data from the parent component to the child component by using:
- @Output()
- @Input()
- Input
- Output
2/25 Which directive connects the value of the controls to the data?
- ng-app
- ng-init
- ng-model
3/25 Async Pipe subscribes to observer and updates expression whenever there is data sent from observer.
- True
- False
4/25 Router service needs to be explicitly provided in angular module to use it in another component via DI.
- True
- False
5/25 Which decorator does the directive use to listen to the host/target events?
- @Listener
- @HostListener
- @OnListener
- @TargetListener
6/25 Which service can be used to extract route parameters inside component?
- Router
- Route
- ActivatedRoute
- CurrentRoute
7/25 What is the purpose of 'resolve' guard in Angular routing?
- To prevent navigation to a route
- To preload data for a component
- To authorize user access to a route
- To lazy load a module
8/25 Which TypeScript feature is commonly used in Angular for type-checking and future JavaScript features?
- Classes and Interfaces
- Arrow functions
- Promises
- Modules
9/25 In Angular, what is the purpose of the 'ng-container' tag?
- To create a new DOM element
- To conditionally group elements without adding extra DOM nodes
- To enhance performance
- To interact with external APIs
10/25 What is the role of 'NgZone' in Angular?
- Managing the data flow
- Interacting with RESTful services
- Optimizing performance by controlling change detection
- Routing and navigation
11/25 In Angular, which decorator is used to listen to DOM events?
- @HostBinding
- @HostListener
- @ViewChild
- @Input
12/25 Which command is used to add Angular Material to an Angular project?
- ng add @angular/material
- ng install @angular/material
- ng generate @angular/material
- ng update @angular/material
13/25 What is the main advantage of using Angular's HttpClient for API calls?
- Automatic conversion of JSON data
- Reduced need for importing modules
- Increased security
- Faster server response
14/25 What is the use of the 'ng-content' tag in Angular?
- To display dynamic content
- For content projection in components
- To bind external content
- To create dynamic templates
15/25 In Angular, what is the purpose of the 'providers' array in '@NgModule'?
- To declare components
- To import other modules
- To provide services available to the module
- To export components and directives
16/25 How can you create a custom validator for a form field in Angular?
- By using an HTML attribute
- By creating a function that returns a validation object
- By using CSS
- By using the 'validator' directive
17/25 What is the main benefit of using Angular's Reactive Forms over Template-Driven Forms?
- Easier syntax
- More control and flexibility in handling form logic
- Automatic data binding
- Built-in validators
18/25 In Angular, which command is used to generate a new lazy-loaded feature module?
```
ng generate module <module-name> --route <route-name> --module <parent-module>
```
- True
- False
19/25 How does Angular's change detection mechanism work by default?
- Event-driven
- One-way data flow
- Zone.js-driven
- Manual invocation
20/25 Which Angular CLI command is used to run end-to-end tests?
```
ng e2e
```
- True
- False
21/25 How can you optimize an Angular application for better performance?
- Using lazy loading for modules
- Increasing the number of HTTP requests
- Avoiding use of the async pipe
- Disabling change detection
22/25 What is the purpose of the 'ContentChildren' decorator in Angular?
- To query DOM elements in the template
- To bind data to child components
- To access child components or directives from a parent
- To create content projection slots
23/25 What is the purpose of the 'async' pipe in Angular templates?
- To create asynchronous methods
- To automatically unsubscribe from Observables
- To delay the execution of functions
- To handle HTTP requests asynchronously
24/25 Which command is used to add a new service in Angular using the CLI?
```
ng generate service my-new-service
```
- True
- False
25/25 In Angular, how are directives applied to HTML elements?
- Using HTML attributes
- By directly manipulating the DOM
- Using JavaScript functions
- Through Angular components
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Angular Basics

1/25 In Angular, you can pass data from the parent component to the child component by using:

2/25 Which directive connects the value of the controls to the data?

3/25 Async Pipe subscribes to observer and updates expression whenever there is data sent from observer.

4/25 Router service needs to be explicitly provided in angular module to use it in another component via DI.

5/25 Which decorator does the directive use to listen to the host/target events?

6/25 Which service can be used to extract route parameters inside component?

7/25 What is the purpose of 'resolve' guard in Angular routing?

8/25 Which TypeScript feature is commonly used in Angular for type-checking and future JavaScript features?

9/25 In Angular, what is the purpose of the 'ng-container' tag?

10/25 What is the role of 'NgZone' in Angular?

11/25 In Angular, which decorator is used to listen to DOM events?

12/25 Which command is used to add Angular Material to an Angular project?

13/25 What is the main advantage of using Angular's HttpClient for API calls?

14/25 What is the use of the 'ng-content' tag in Angular?

15/25 In Angular, what is the purpose of the 'providers' array in '@NgModule'?

16/25 How can you create a custom validator for a form field in Angular?

17/25 What is the main benefit of using Angular's Reactive Forms over Template-Driven Forms?

18/25 In Angular, which command is used to generate a new lazy-loaded feature module?

19/25 How does Angular's change detection mechanism work by default?

20/25 Which Angular CLI command is used to run end-to-end tests?

21/25 How can you optimize an Angular application for better performance?

22/25 What is the purpose of the 'ContentChildren' decorator in Angular?

23/25 What is the purpose of the 'async' pipe in Angular templates?

24/25 Which command is used to add a new service in Angular using the CLI?

25/25 In Angular, how are directives applied to HTML elements?