Tips, Tricks, and Techniques for Node.js Development 3.1: All about Time

Tips, Tricks, and Techniques for Node.js Development 3.1: All about Time

Assessment

Interactive Video

Information Technology (IT), Architecture

University

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

This video tutorial covers the event loop in Node.js, explaining its phases and how asynchronous code is handled. It discusses callbacks, promises, generators, and async/await. The tutorial also provides code examples to demonstrate the behavior of setTimeout, setImmediate, and process.nextTick, highlighting how they interact with the event loop.

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5 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary purpose of the event loop in JavaScript?

To optimize memory usage

To handle synchronous operations

To compile JavaScript code

To manage asynchronous operations

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which phase of the event loop handles callbacks from setTimeout and setInterval?

Timer phase

Check phase

Close callbacks phase

Poll phase

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the role of the 'check' phase in the event loop?

To manage timers

To process I/O events

To execute close callbacks

To handle setImmediate callbacks

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the event loop, which function is guaranteed to execute after the current operation completes, regardless of the current phase?

setTimeout

process.nextTick

setInterval

setImmediate

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When using setTimeout and setImmediate, which one is guaranteed to execute first?

setImmediate

setTimeout

Both execute simultaneously

Neither, it depends on the event loop phase

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