In Angular, the _____ Guard checks whether a route can be deactivated.
- CanActivate
- CanActivateChild
- CanDeactivate
- CanLoad
In Angular, the CanDeactivate Guard checks whether a route can be deactivated, allowing you to confirm or prevent the user's navigation away from the current route.
For debugging and profiling Angular applications, developers can use the _____ browser extension.
- AngularDebugger
- AngularDevTools
- Augury
- Redux DevTools
For debugging and profiling Angular applications, developers can use the Augury browser extension. It provides insights into an Angular app's structure and behavior.
What is the purpose of the onPrepare function in a Protractor configuration file?
- Define Protractor plugins
- Define Protractor's test reporter
- Initialize the browser
- Set the test suite to run
In Protractor, the onPrepare function is used to initialize the browser before tests run, making it suitable for setting up the environment.
What is the primary purpose of using a Route Resolver in Angular?
- Display a loading spinner
- Execute route guards
- Fetch route parameters and data
- Terminate the navigation immediately
The primary purpose of a Route Resolver in Angular is to fetch route parameters and data before navigating to a route.
You're developing an e-commerce application and want to create a shopping cart service that maintains the state of the cart across different components. What would be the best approach to ensure that all components refer to the same instance of the service?
- Using 'ngIf' directive
- Using separate instances for each component
- Using the 'providedIn' property
- Using the 'singleton' pattern
The best approach to ensure that all components refer to the same instance of a service is to use the 'singleton' pattern, which allows a single instance of the service to be shared among multiple components.
In Angular testing, the _____ function is used to simulate user interactions on elements.
- expect
- mock
- query
- trigger
In Angular testing, the trigger function is used to simulate user interactions on elements, such as clicks, inputs, and other events.
The RxJS operator _____ is used to delay the emissions from an Observable.
- debounceTime
- filter
- mergeMap
- skip
The RxJS operator debounceTime is used to delay the emissions from an Observable. It's often used for scenarios like handling user input and performing searches with a delay.
The _____ strategy in Angular's change detection checks the component and its children only when an event is fired.
- Always
- CheckOnce
- Default
- OnPush
The OnPush strategy in Angular's change detection checks the component and its children only when an event is fired, optimizing performance.
Which feature in Angular allows you to create custom HTML elements that can be used outside Angular applications?
- Angular Components
- Angular Elements
- Angular Modules
- Angular Services
The feature in Angular that allows you to create custom HTML elements usable outside Angular applications is Angular Elements.
You are tasked with optimizing an Angular application's load time. One strategy is to minimize the number of services that are eagerly loaded. Which technique can help achieve this?
- Using 'ngFor' directive
- Using 'ngIf' directive
- Using the 'async' pipe
- Using the 'providedIn' property
To minimize the number of services that are eagerly loaded in an Angular application, you can use the 'providedIn' property to specify that a service should be lazily loaded, which can improve load time.