Promise Chaining Challenge

Promise Chaining Challenge

Assessment

Interactive Video

•

Information Technology (IT), Architecture

•

University

•

Practice Problem

•

Hard

Created by

Wayground Content

FREE Resource

The video tutorial covers advanced promise chaining concepts in JavaScript. It begins with an introduction to promise chaining, followed by simulating asynchronous operations using setTimeout. The tutorial then explores the drawbacks of nested promises and demonstrates how promise chaining can simplify code. Finally, it applies promise chaining in Mongoose operations, showcasing its practical use in database interactions.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main advantage of using promise chaining over traditional promise handling?

It allows for synchronous code execution.

It reduces the complexity of nested callbacks.

It eliminates the need for error handling.

It increases the speed of asynchronous operations.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the basic promise setup, what is used to simulate an asynchronous delay?

setInterval

setImmediate

setTimeout

setAsync

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a key problem with nesting promises?

It makes the code run slower.

It leads to deeply nested and complex code.

It requires more memory.

It prevents error handling.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does promise chaining improve code readability?

By using fewer lines of code.

By eliminating the need for comments.

By using more descriptive variable names.

By allowing multiple promises to be handled in a flat structure.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of returning a promise in a 'then' callback?

To stop the execution of further promises.

To allow chaining of another 'then' call.

To convert the promise to a synchronous operation.

To handle errors more effectively.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the Mongoose example, what operation is performed after updating a user's age?

Resetting the user's age.

Deleting the user.

Counting users with the same age.

Fetching all users.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which Mongoose method is used to count documents with a specific condition?

aggregate

countDocuments

find

count

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