--description--

To pass the quiz, you must correctly answer at least 18 of the 20 questions below.

--quizzes--

--quiz--

--question--

--text--

What is asynchronous programming?

--distractors--

A method for executing code sequentially.

A technique to handle errors in your code.

A way to make network requests, typically to retrieve or send data to the server.

--answer--

A method to execute code concurrently without blocking the main thread.

--question--

--text--

What is a thread?

--distractors--

A function used to retrieve data from the server.

A program that executes JavaScript code in a web browser.

A special type of function that is passed as an argument to another function.

--answer--

A sequence of instructions that can be executed independently of the main program flow.

--question--

--text--

What is the purpose of the Fetch API in JavaScript?

--distractors--

To manage asynchronous callbacks.

To create and manage cookies.

To render dynamic HTML content.

--answer--

To make network requests to servers.

--question--

--text--

Which HTTP method is used to send data to a server for processing?

--distractors--

GET

DELETE

HEAD

--answer--

POST

--question--

--text--

Which of the following is the correct way to fetch data from an API?

--distractors--

fetch('https://api.example.com/data')
  .accept(response => response.json())
  .accept(data => console.log(data))

fetch('https://api.example.com/data')
  .allow(response => response.json())
  .allow(data => console.log(data))

fetch('https://api.example.com/data')
  .send(response => response.json())
  .send(data => console.log(data))

--answer--

fetch('https://api.example.com/data')
  .then(response => response.json())
  .then(data => console.log(data))

--question--

--text--

What is a promise in JavaScript?

--distractors--

A way to synchronize multiple operations when working with the Fetch API.

A special type of callback function that you must use in all higher order functions.

A technique used to handle errors when you work with the Fetch API.

--answer--

An object that represents the eventual completion (or failure) of an asynchronous operation.

--question--

--text--

What does promise chaining allow you to do?

--distractors--

Allows you to execute multiple synchronous operations in parallel.

Allows you to handle synchronous operations more efficiently.

Allows you to retry failed operations automatically.

--answer--

Allows you to perform a sequence of asynchronous operations one after the other.

--question--

--text--

Which method is used to handle a successful completion of a promise?

--distractors--

.finally()

.catch()

.error()

--answer--

.then()

--question--

--text--

Which method is used to handle errors in a promise chain?

--distractors--

.finally()

.then()

.error()

--answer--

.catch()

--question--

--text--

Which of the following is NOT a valid HTTP method?

--distractors--

PUT

GET

POST

--answer--

SEND

--question--

--text--

Which of the following is the correct syntax for creating an async function?

--distractors--

function myFunction() {}

function async myFunction() {}

async {} => ()

--answer--

async function myFunction() {}

--question--

--text--

What does the await keyword do in an async function?

--distractors--

It creates a new promise.

It executes code immediately without waiting and returns an object.

It logs the result of the promise and returns null.

--answer--

It pauses the execution of the function until the promise is resolved.

--question--

--text--

Which of the following APIs is used to provide a way for websites to request the user's location?

--distractors--

Locator API

Geo API

Locate API

--answer--

Geolocation API

--question--

--text--

Which of the following attributes downloads the script asynchronously but waits for the HTML document to be fully parsed before running the script?

--distractors--

asyncDefer

deferred

deferring

--answer--

defer

--question--

--text--

What will the following code return?

fetch('https://api.example.com/data')

--distractors--

An error saying that the data is corrupted.

An error saying that the data cannot be fetched.

Nothing will be returned and JavaScript will move to the next function in the script.

--answer--

A Promise that resolves to a Response object.

--question--

--text--

What is the default HTTP method for the Fetch API?

--distractors--

POST

PUT

DELETE

--answer--

GET

--question--

--text--

Which of the following methods is used to delete resources on the server?

--distractors--

REMOVING

REMOVE

DELETING

--answer--

DELETE

--question--

--text--

Which of the following is the correct way to create a promise?

--distractors--

const promise = get Promise((resolve, reject) => {
  setTimeout(() => {
    resolve('Data received successfully');
  }, 2000);
});

const promise = set Promise((resolve, reject) => {
  setTimeout(() => {
    resolve('Data received successfully');
  }, 2000);
});

const promise = put Promise((resolve, reject) => {
  setTimeout(() => {
    resolve('Data received successfully');
  }, 2000);
});

--answer--

const promise = new Promise((resolve, reject) => {
  setTimeout(() => {
    resolve('Data received successfully');
  }, 2000);
});

--question--

--text--

Which of the following attributes tells the browser to download the script file asynchronously while continuing to parse the HTML document?

--distractors--

resolve

catch

put

--answer--

async

--question--

--text--

Which method of the Geolocation API is used to get the current position of a device?

--distractors--

getLocation()

getPosition()

getLatLong()

--answer--

getCurrentPosition()