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Eugene Andre

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Thompson Hicks

Angular Components Quiz - Learn Angular Fundamentals Beginners Guide

Passed

Finished On22 Aug 2025, 09:00 AM

Time Taken8 min 42 sec

Time Limit15 min

Pass Mark60% (24 / 40)

Which lifecycle hook runs once, right after the first ngOnChanges?

Correct10 / 10 marks

ngOnInit Student's answer
ngAfterViewInit
ngDoCheck
ngOnDestroy

Explanation

ngOnInit is called once after Angular sets the component's input properties for the first time.

Time spent 1 min 48 sec

Which decorator lets a parent component pass data into a child component?

Correct10 / 10 marks

@Output()
@Input() Student's answer
@ViewChild()
@HostBinding()

Explanation

@Input() marks a property as bindable from the parent template, for example [title]="courseTitle".

Time spent 1 min 12 sec

What does the async pipe do in a template?

Incorrect0 / 10 marks

Formats a date value Student's answer
Subscribes to an Observable and returns its latest value Correct answer
Delays rendering by one change detection cycle
Converts a Promise into a string

Explanation

The async pipe subscribes to an Observable or Promise, returns the latest emitted value and unsubscribes automatically when the component is destroyed.

Time spent 3 min 06 sec

Which structural directive conditionally adds an element to the DOM?

Correct10 / 10 marks

*ngFor
*ngIf Student's answer
[ngClass]
[hidden]

Explanation

*ngIf creates or removes the element from the DOM, while [hidden] only toggles its visibility.

Time spent 2 min 36 sec

Final Score 30 / 40

B 75% - Good

Correct3 questions
Incorrect1 question
Skipped0 questions
Attempts used2 of 3

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Attempt History

Attempt 115 Aug 2025

55%Failed
Attempt 2 (viewing)22 Aug 2025

75%Passed
Attempt 3Not taken

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Eugene Andre

Attempt Review

Thompson Hicks

Which lifecycle hook runs once, right after the first ngOnChanges?

Which decorator lets a parent component pass data into a child component?

What does the async pipe do in a template?

Which structural directive conditionally adds an element to the DOM?

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