What does the alert() function do in JavaScript?

Changes the background color of the page

Prints a message to the document

What's the meaning of null in JavaScript?

null means no value, set by the developer

What is the purpose of JSON.stringify()?

Converts a JavaScript object to a JSON string.

Converts a JSON string to a JavaScript object.

Encrypts JavaScript data for security.

Converts numbers into a string format.

How do you declare an arrow function in JavaScript?

const myFunc = () => { return 10; };

function => myFunc() { return 10; }

const myFunc = => { return 10; }

What is a branch in Git?

A feature that merges conflicts

What is the difference between PUT and PATCH?

PUT updates the whole resource, PATCH updates part of it.

PUT is only for creating resources, PATCH is only for deleting.

PATCH always results in a 500 error.

What does Object.keys(obj) return?

An array of keys of the object.

An array of values of the object.

A new object with the same keys.

What does Object.values(obj) return?

An array of values of the object.

An array of keys of the object.

A new object with the same keys.

What is a primary feature of non-relational databases?

They store data without predefined schemas.

They are designed to store structured data only.

They use foreign keys for relationships.

What does CRUD stand for in web development?

Connect, Render, Upload, Deploy

A set of rules for communication between software applications.

A front-end library for designing UI.

A security feature to protect databases.

name5 Quiz: 47 Practice Questions

47 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

What is a class in CSS?

A way to apply styles to multiple elements by using a shared selector.

A JavaScript function that modifies CSS properties.

A function that creates animations.

A function that creates HTML elements.

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

What tag is used to create hyperlinks?

<a></a>

<b></b>

3.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

What is an ID in HTML and CSS?

A unique identifier used to style a single element in CSS

A tag that creates a hyperlink in HTML

A way to apply styles to multiple elements at once

A property used to change text color in CSS

4.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

What keyword is used to declare a variable in JavaScript?

const

let

var

All of the above

5.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Which symbol is used for strict equality comparison in JavaScript?

"="

"=="

"==="

"!="

6.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

What is a correct way of creating a function in JavaScript?

function myFunction() { }

def myFunction() { }

func myFunction() { }

create function myFunction() { }

7.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

What does the GET method do in an HTTP request?

Sends data to the server

Retrieves data from the server

Updates data on the server

Deletes data on the server

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name5

What is a class in CSS?

What tag is used to create hyperlinks?

What is an ID in HTML and CSS?

What keyword is used to declare a variable in JavaScript?

Which symbol is used for strict equality comparison in JavaScript?

What is a correct way of creating a function in JavaScript?

What does the GET method do in an HTTP request?

How to add a new element in an array ?

Which HTTP status code indicates a successful request?

Which HTTP status code indicates that the requested resource was not found?

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