Pluralsight Angular Assessment Answers 2021

Pluralsight Angular Assessment Answers: Angular gives us an astonishing arrangement of tools to help us unit test our code, however, each one of those tools and techniques should be learned. In this course, Unit Testing in Angular, you will learn how to viably unit test your Angular code. To start with, you will learn to write detached tests to rapidly and effectively test administrations, lines, and components. Then, you will investigate integration tests, used to test your components with their formats. At that point, you will perceive how to manage progressed subjects like asynchronous code. At last, and above all, you will understand writing viable, viable unit tests. At the point when you are done with this course, you will feel sure about your capacity to write great unit tests for your Angular projects.

Pluralsight Angular Assessment Questions and Answers 2021

1. Which decorator lets a child component expose an event to a parent component?

@Raise
@Event
@0utput
@EventEmitter

2. What is the meaning of the return type of this function: getHero(id: number): Observable { }?

It returns a Hero object with an associated Observable property
It returns an Observable that emits an item of type Hero
It returns an observable created by passing in a hero object
it returns an observable that can be mapped to an item of type hero

3. What is the purpose of Reactive Extensions (RxJS) in an Angular application?

React to end-user changes and automatically display appropriate validation messages
create and manipulate streams of events and data using observable sequences and fluent query operators
React to the form factor and orientation of the device and automatically adjust the display for optimum viewing
Define a build pipeline that reacts to code changes and deploys the application to production

4. Which is the correct syntax for two-way data binding?

<input ngModel="LastName' />"
<input [ngModel]="LastName' />"
<input [(ngModel)]="LastName />"
<input ([ngModel])="LastName />"

5. Which of the following will result in the style classes "main" and "tall" being added to the DOM node?

[ngClass]="'main tall"
[ngClass]="'main + tall"
[ngClass]="'main : tall'
[ngClass]="'main && tall'"

6. What Angular CLI command should you run in your Cl server before deploying your Angular app?

ngbuild
ng prod
ng build --prod
ng prod --build

7. Which character is used to prefix a structural directive?

8. What is the default return value of the HttpClient services get function?

| Observable
static value
Promise
callback function

9. What does this syntax accomplish? routerLink="/crisis-center"?

The syntax links a route to a service by matching the assigned string to a service class name.
The syntax navigates to the component with a path matching the assigned string.
The syntax navigates to the component with a name matching the assigned string.
The syntax links a route with data by matching the assigned string to a property name

10. According to the Angular Style Guide, why should unit test files be named the same as the feature they represent, but with a .spec.ts extension?

Keeps the file structure more organized
They shouldn't. Instead, unit tests should be in the same file as the Angular feature
Helps identify which files to serve with ng serve
Provides a consistent way to identify tests with pattern matching test runners

11. Which lifecycle hook fires whenever a change occurs to any of the component's input properties?

ngOnDirty
ngOnInit
ngOnChanges
ngOnKeyPress
ngOnInput

12. What is the purpose of the imports array of an Angular module?

To define what external libraries, if any, your app needs
Define the set of modules whose exported components directives and pipes the templates of this module need
To define the set of services that are created and available for dependency injection
To define what information a form will capture

13. What is the purpose of the safe navigation operator?