Angular Basics

1/25 How many instances of service will be created if you provide a custom service in two components’ “providers” section of @Component decorator?
- 1
- 2
- 3
- 4
2/25 In Angular routing, which tag is used to render matched component via active route?
- <router></router>
- <router-output></router-output>
- <router-outlet></router-outlet>
- <router-display></router-display>
3/25 How can you access a parent component's property from a child component in Angular?
- Using @ViewChild decorator
- Using @Input() decorator
- Using @Output() decorator
- Using @Injectable decorator
4/25 How is RxJS used in Angular for managing asynchronous data?
- Through Promises
- Through Observables
- Through Async/Await
- Through Callbacks
5/25 What Angular feature can be used for performance optimization by preventing unnecessary change detection?
- NgZone
- ChangeDetectionStrategy.OnPush
- NgModule
- NgClass
6/25 Which Angular security feature helps prevent cross-site scripting (XSS) attacks?
- HTTP Interceptors
- Content Security Policy
- Sanitization
- Web Workers
7/25 Which TypeScript feature is commonly used in Angular for type-checking and future JavaScript features?
- Classes and Interfaces
- Arrow functions
- Promises
- Modules
8/25 How does Angular handle form validation for reactive forms?
- Using directives
- Using validators in form control instances
- Using HTML5 attributes
- Using CSS classes
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 In Angular, which decorator is used to listen to DOM events?
- @HostBinding
- @HostListener
- @ViewChild
- @Input
11/25 In Angular, how can you pass multiple parameters in a route?
- Using the @Param decorator
- Using route snapshot
- Using query parameters
- Using route guards
12/25 Which Angular feature is used for communication between non-related components?
- Input and Output decorators
- Services and Dependency Injection
- Directives
- Local storage
13/25 What is AOT compilation in Angular?
- Asynchronous Object Templates
- Ahead-of-Time Compilation
- Array of Templates
- Angular Object Transformation
14/25 How can you implement internationalization (i18n) in an Angular application?
- Using Angular CLI's i18n tools
- Through CSS
- Using external libraries only
- By defining multiple components for each language
15/25 Which Angular lifecycle hook is called after Angular fully initializes a component's view?
- ngOnInit
- ngAfterViewInit
- ngOnChanges
- ngOnDestroy
16/25 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
17/25 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
18/25 Which Angular CLI command is used to generate a service?
- ng generate service
- ng create service
- ng add service
- ng new service
19/25 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
20/25 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
21/25 How does Angular's change detection mechanism work by default?
- Event-driven
- One-way data flow
- Zone.js-driven
- Manual invocation
22/25 In Angular, how is content projection achieved?
- Using the <ng-content> tag
- Using the <ng-container> tag
- Using the <ng-template> tag
- Using the <content> tag
23/25 Which command is used to add a new service in Angular using the CLI?
```
ng generate service my-new-service
```
- True
- False
24/25 What is the purpose of the 'CanDeactivate' guard in Angular routing?
- To prevent unauthorized access to a route
- To preload data before navigating to a route
- To confirm navigation away from the current route
- To dynamically load modules for a route
25/25 Which Angular CLI command is used to analyze the size of the application bundles?
```
ng build --prod --stats-json
```
- True
- False
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Angular Basics

1/25 How many instances of service will be created if you provide a custom service in two components’ “providers” section of @Component decorator?

2/25 In Angular routing, which tag is used to render matched component via active route?

3/25 How can you access a parent component's property from a child component in Angular?

4/25 How is RxJS used in Angular for managing asynchronous data?

5/25 What Angular feature can be used for performance optimization by preventing unnecessary change detection?

6/25 Which Angular security feature helps prevent cross-site scripting (XSS) attacks?

7/25 Which TypeScript feature is commonly used in Angular for type-checking and future JavaScript features?

8/25 How does Angular handle form validation for reactive forms?

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

10/25 In Angular, which decorator is used to listen to DOM events?

11/25 In Angular, how can you pass multiple parameters in a route?

12/25 Which Angular feature is used for communication between non-related components?

13/25 What is AOT compilation in Angular?

14/25 How can you implement internationalization (i18n) in an Angular application?

15/25 Which Angular lifecycle hook is called after Angular fully initializes a component's view?

16/25 What is the use of the 'ng-content' tag in Angular?

17/25 In Angular, what is the purpose of the 'providers' array in '@NgModule'?

18/25 Which Angular CLI command is used to generate a service?

19/25 How can you create a custom validator for a form field in Angular?

20/25 What is the main benefit of using Angular's Reactive Forms over Template-Driven Forms?

21/25 How does Angular's change detection mechanism work by default?

22/25 In Angular, how is content projection achieved?

23/25 Which command is used to add a new service in Angular using the CLI?

24/25 What is the purpose of the 'CanDeactivate' guard in Angular routing?

25/25 Which Angular CLI command is used to analyze the size of the application bundles?