Angular MCQ : Angular Fundamentals : Part 4

(1) What is the @ViewChild decorator used for?

• To add metadata for the children of a view

• The InjectionToken class To get a handle on a DOM node decorated with a ref tag(#ref_id)

• To make custom * directives

(2) An Observable represents what?

• Multiple values now

• Multiple values in the future

• Multiple values now or in the future

(3) Where should you sort and filter data?

• In your component

• In a directive

• In a filter

(3) Where should you sort and filter data?

• In your component

• In a directive

• In a filter

(4) Which decorator lets you inject a service registered with an Injection Token?

• Import

• Inject

• Input

(5) What directive helps you hide functionality you don’t want to be visible before users log in?

• ngHide

• ngShow

• ngIf

• ngAuthenticated

(6) Which decorator lets you inject a service registered with an Injection Token?

• Value comparison

• Deep value comparison

• Immutable comparison

• Mutable comparison

• Identity comparison

(7) Which of these would you use to toggle applying multiple classes to an element?

• Use a class binding

• Use a style binding

• Use ngClass

(8) What is the default token in Angular’s Dependency Injector?

• A string

• A class

• The Token class

(9) Which decorator lets you inject a service registered with an Injection Token?

• Import

• Inject

• Input

(10) Which decorator lets you inject a service registered with an Injection Token?

• Import

• Inject

• Input

 

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