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What is a zone in Angular?

A Zone is an execution context that persists across async tasks and allows the creator of the zone to observe and control execution of the code within the zone.

These execution contexts allow Angular to track the start and completion of asynchronous activities and perform tasks as required (for example, change detection).

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What is AngularJS? What are the key features of AngularJS. What are the advantages of using AngularJS? What are the key components of AngularJS Framework? What are the limitations of using AngularJS? Explain about AngularJS Expression. Can we pass parameters to an AngularJS controller? What is bower? What is a component in Angular? What are .ts extension files? How do you communicate between different modules of your application using angularjs? How does interpolation, for example "{{ someModel }}" works? What is $rootScope and how does it relate to $scope? Advantages of components in AngularJS. What is ngBind directive in AngularJS? What is ngIf directive in Angular? Difference between ng-show/ng-hide directives and ngIf in angularjs. Explain directives in Angular. What is the role of selector property of components in AngularJS? Explain Angular architecture. Type of module in Angular 2. Explain root module in angular2. What is an Angular module? What does the npm start do? How do I create a multiline template in the Angular component? What is RXJS and how does it relate to Angular? How to check if a variable is defined using ngIf in Angular? How to check for multiple conditions using Angular ng-if? Features of Angular2. Explain ng-container in Angular. Types of directives in Angular. Difference between Directive and component in Angular. Difference between ngOnInit and ngAfterViewInit of Angular2. Difference between Constructor and ngOnInit in Angular. What is a zone in Angular? Can we use ngIf and ngFor on the same element in Angular? What is router-link directive? Difference between router-link and [router-link] with brackets. Explain Hot Module Replacement (HMR). What is webpack? Difference between ng model and ng bind directives. What is forRoot and forChild method in angular? How do you create and register/provide service using ng CLI? Difference between declarations, providers, and import in NgModule. Explain pipes in Angular. What is angular routing? How to check the Angular version installed? Explain the structure of Angular application projects. What is angular CLI? Elements of the Component decorator in Angular. Explain Angular services. How do I create a service as a singleton in Angular? What is service worker and its advantages in Angular? How does *ngIf directive works? Difference between ng-class and ng-style directives. Difference between Component and template/templateURL. Default view encapsulation model in Angular. What is Ivy in Angular? Types of directives in Angular. What are structural directives in Angular? Difference between Structural and attribute directives. What is <ng-template> in Angular? Explain <ng-container> element in Angular. Name a few builtin pipes in Angular that you are aware of. What are the different types of Pipes in Angular? What is JsonPipe? What are the methods in Angular FormBuilder? What is ngForm directive? What are the child classes of AbstractControl? Difference between Promises and Observable. What is NGModule? Can a Angular component be declared in multiple modules? Design a game using Angular in which the user should click on the highlighted area to score before it vanishes. Also, it should display score with different levels like easy/medium/difficult. What is tree shaking in Angular? What defines an Angular view? Difference between a view, a host view, and an embedded view. Difference between createEmbeddedView and createComponent in Angular. Various forms of data binding markup in Angular. Is ngModel an attribute directive? Mention a few roles of Services in Angular. How do I make a parent component listen for child events? What is the difference between CSS and SCSS? What is router outlet in Angular? What are angular guards? Mention a few drawbacks (disadvantages) of using Angular. What is Angular Universal or Angular SSR? Explain index signature in typescript. Can we consume SOAP web service with Angular Application? 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