Angular 4 Quiz – Multiple Choice Questions and Answers

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Angular 4 Quiz – Multiple Choice Questions and Answers: Below are the few Angular 4 Multiple Choice Questions and Answers which test your knowledge of Angular 4 Concepts. So, interested aspirants can take the Angular 4 Online Practice Quiz. After completion of the Angular MCQ Quiz, aspirants will get an idea of what types of questions, and topics are to be asked in any interviews. And you can also check your level of performance by attending the Angular Online Quiz. Moreover, by practicing the below given Angular 4 Multiple Choice Questions and Answers, students can learn the new Angular 4 Concepts.

Angular 4 Quiz – Overview

Angular 4 Multiple Choice Questions and Answers – Practice Online

What is Angular 4?
a) A programming language
b) A framework for building web applications
c) A database management system
d) An operating system
Answer: b) A framework for building web applications
Explanation: Angular 4 is a front-end web application development framework that is used for building single-page applications and mobile applications.

What is the latest version of Angular?
a) Angular 1
b) Angular 2
c) Angular 3
d) Angular 4
Answer: d) Angular 4
Explanation: Angular 4 is the latest stable version of Angular.

What is the purpose of the NgModule decorator in Angular?
a) To define a module
b) To define a component
c) To define a service
d) To define a directive
Answer: a) To define a module
Explanation: The NgModule decorator is used to define a module in Angular. A module is a container for a group of related components, directives, and services.

Which of the following is a built-in directive in Angular?
a) *ngFor
b) *ngIf
c) *ngSwitch
d) All of the above
Answer: d) All of the above
Explanation: *ngFor, *ngIf, and *ngSwitch are all built-in directives in Angular.

What is the purpose of the ElementRef class in Angular?
a) To create a reference to an element in the DOM
b) To create a reference to a service
c) To create a reference to a component
d) To create a reference to a module
Answer: a) To create a reference to an element in the DOM
Explanation: The ElementRef class is used to create a reference to an element in the DOM.

What is the purpose of the Renderer2 class in Angular?
a) To create a reference to an element in the DOM
b) To create a reference to a service
c) To create a reference to a component
d) To manipulate the DOM
Answer: d) To manipulate the DOM
Explanation: The Renderer2 class is used to manipulate the DOM in Angular.

What is the purpose of the @ViewChild decorator in Angular?
a) To reference a child component
b) To reference a child directive
c) To reference a child element
d) All of the above
Answer: d) All of the above
Explanation: The @ViewChild decorator is used to reference a child component, directive, or element in Angular.

What is the purpose of the @ContentChild decorator in Angular?
a) To reference a child component
b) To reference a child directive
c) To reference a child element
d) All of the above
Answer: c) To reference a child element
Explanation: The @ContentChild decorator is used to reference a child element in Angular.

What is the purpose of the ActivatedRoute class in Angular?
a) To access the parameters passed to a route
b) To access the query parameters passed to a route
c) To access the route data
d) All of the above
Answer: d) All of the above
Explanation: The ActivatedRoute class is used to access the parameters and query parameters passed to a route, as well as the route data in Angular.

What is the purpose of the RouterLink directive in Angular?
a) To create a hyperlink to another page
b) To create a hyperlink to another component
c) To create a hyperlink to another route
d) All of the above
Answer: c) To create a hyperlink to another route
Explanation: The RouterLink directive is used to create a hyperlink to another route in Angular.

What is the purpose of the ngModel directive in Angular?
a) To create a two-way data binding
b) To create a one-way data binding
c) To create a form control
d) To create a template reference variable
Answer: a) To create a two-way data binding
Explanation: The ngModel directive is used to create a two-way data binding between a form control and a component property in Angular.

What is the purpose of the ngClass directive in Angular?
a) To add or remove a CSS class based on a condition
b) To create a CSS animation
c) To create a CSS transition
d) All of the above
Answer: a) To add or remove a CSS class based on a condition
Explanation: The ngClass directive is used to add or remove a CSS class based on a condition in Angular.

What is the purpose of the ngStyle directive in Angular?
a) To add or remove a CSS style based on a condition
b) To create a CSS animation
c) To create a CSS transition
d) All of the above
Answer: a) To add or remove a CSS style based on a condition
Explanation: The ngStyle directive is used to add or remove a CSS style based on a condition in Angular.

What is the purpose of the Http module in Angular?
a) To make HTTP requests to a server
b) To manage application state
c) To create components
d) To create modules
Answer: a) To make HTTP requests to a server
Explanation: The Http module is used to make HTTP requests to a server in Angular.

What is the purpose of the HttpClientModule in Angular?
a) To handle HTTP errors
b) To intercept HTTP requests and responses
c) To provide HTTP services to components
d) All of the above
Answer: d) All of the above
Explanation: The HttpClientModule is used to handle HTTP errors, intercept HTTP requests and responses, and provide HTTP services to components in Angular.

What is the purpose of the ngIf directive in Angular?
a) To create a loop
b) To conditionally render HTML elements
c) To create a switch statement
d) To create a form control
Answer: b) To conditionally render HTML elements
Explanation: The ngIf directive is used to conditionally render HTML elements in Angular.

What is the purpose of the ngFor directive in Angular?
a) To conditionally render HTML elements
b) To create a switch statement
c) To create a loop
d) To create a form control
Answer: c) To create a loop
Explanation: The ngFor directive is used to create a loop in Angular.

What is the purpose of the ngSwitch directive in Angular?
a) To conditionally render HTML elements
b) To create a switch statement
c) To create a loop
d) To create a form control
Answer: b) To create a switch statement
Explanation: The ngSwitch directive is used to create a switch statement in Angular.

What is the purpose of the ngContent directive in Angular?
a) To create a content projection
b) To create a content reference
c) To create a component
d) To create a module
Answer: a) To create a content projection
Explanation: The ngContent directive is used to create a content projection in Angular.

What is the purpose of the EventEmitter class in Angular?
a) To emit events from a component to its parent component
b) To emit events from a service to a component
c) To emit events from a component to a service
d) To emit events from a directive to a component
Answer: a) To emit events from a component to its parent component
Explanation: The EventEmitter class is used to emit events from a component to its parent component in Angular. It is often used in conjunction with the @Output decorator to allow a child component to communicate with its parent component.

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