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Angular Basics
1/25
In Angular, you can pass data from the parent component to the child component by using:
@Output()
@Input()
Input
Output
Next >
2/25
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
Next >
3/25
Custom pipe can modify actual value of variable apart from different presention in HTML.
True
False
Next >
4/25
Which command is used to run the Static Code analysis of Angular application?
ng build
ng profile
ng lint
ng serve
Next >
5/25
Router service needs to be explicitly provided in angular module to use it in another component via DI.
True
False
Next >
6/25
Which decorator does the directive use to listen to the host/target events?
@Listener
@HostListener
@OnListener
@TargetListener
Next >
7/25
Which service can be used to extract route parameters inside component?
Router
Route
ActivatedRoute
CurrentRoute
Next >
8/25
Which CLI command is used to generate a new Angular module?
ng generate module
ng create module
ng build module
ng start module
Next >
9/25
In Angular, which service is commonly used for state management?
HttpClient
NgRx Store
Router
FormsModule
Next >
10/25
What Angular feature can be used for performance optimization by preventing unnecessary change detection?
NgZone
ChangeDetectionStrategy.OnPush
NgModule
NgClass
Next >
11/25
What is the main purpose of the 'async' pipe in Angular?
To run functions asynchronously
To automatically unsubscribe from observables
To speed up the application
To delay the execution of functions
Next >
12/25
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
Next >
13/25
In Angular, how can you pass multiple parameters in a route?
Using the @Param decorator
Using route snapshot
Using query parameters
Using route guards
Next >
14/25
What is the use of the 'ngFor' directive in Angular?
To create a custom event
To repeat a template for each item in a list
To hide or show an element
To bind data to a property
Next >
15/25
Which Angular lifecycle hook is called after Angular fully initializes a component's view?
ngOnInit
ngAfterViewInit
ngOnChanges
ngOnDestroy
Next >
16/25
Which Angular CLI command is used to generate a service?
ng generate service
ng create service
ng add service
ng new service
Next >
17/25
What is the primary use of the NgRx library in Angular applications?
Form Validation
Routing Management
State Management
HTTP Request Handling
Next >
18/25
How does Angular's change detection mechanism work by default?
Event-driven
One-way data flow
Zone.js-driven
Manual invocation
Next >
19/25
Which Angular CLI command is used to run end-to-end tests?
ng e2e
True
False
Next >
20/25
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
Next >
21/25
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
Next >
22/25
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
Next >
23/25
What is the primary function of the 'Renderer2' service in Angular?
To perform server-side rendering
To manage rendering of components
To handle routing and navigation
To render data-bound properties
Next >
24/25
What is the advantage of using Angular's 'lazy loading' feature for modules?
Improves initial load performance by splitting the app into multiple bundles
Decreases overall application size
Automates the build process
Enhances security by loading modules on-demand
Next >
25/25
In Angular, what is the purpose of the 'ng-template' directive?
To define templates that can be used with structural directives
To inject external HTML content
To create reusable components
To handle form submissions
Next >
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