Tips, Tricks, and Techniques for Node.js Development 3.2: What about Callbacks?

Tips, Tricks, and Techniques for Node.js Development 3.2: What about Callbacks?

Assessment

Interactive Video

Information Technology (IT), Architecture

University

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

This video tutorial covers the transition from writing synchronous code to using callbacks, and introduces the OK package to simplify error handling in callback functions. It begins with an explanation of synchronous programming, followed by a practical implementation. The tutorial then demonstrates how to convert this code to use callbacks, addressing common issues like error handling. Finally, the OK package is introduced as a tool to streamline callback code, making it more efficient and readable.

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7 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a key characteristic of synchronous programming?

It executes code in parallel.

It is non-blocking.

It executes code from top to bottom.

It requires callbacks for execution.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a major drawback of reading files synchronously?

It requires more memory.

It blocks the execution of other code.

It is faster than asynchronous reading.

It is more secure.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When using callbacks, what is crucial to handle properly?

Memory allocation

Error handling

Data formatting

Variable declaration

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens if an error occurs in a callback without proper handling?

The error is automatically fixed.

The program stops executing.

The program runs faster.

The program continues without issues.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in converting synchronous code to use callbacks?

Add more variables

Remove synchronous code

Increase memory usage

Add callback functions

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the OK package help simplify in callback-based code?

Variable declaration

Data processing

Error handling

File reading

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does the OK package improve code readability?

By reducing the number of variables

By increasing execution speed

By removing boilerplate error handling code

By adding more comments

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