JavaScript Async Programming

Question 1

What is the primary benefit of version control in async programming for JavaScript?

Accepted Answer

It tracks changes and enables collaboration

Answer

It makes files larger

Answer

It replaces testing

Answer

It eliminates the need for documentation

Question 2

Which principle is fundamental to good async programming practice?

Accepted Answer

Separation of concerns and modularity

Answer

Writing as much code as possible

Answer

Avoiding all abstraction

Answer

Never refactoring code

Question 3

In JavaScript certification, what is the purpose of automated testing?

Accepted Answer

To catch regressions and verify functionality continuously

Answer

To replace manual code review entirely

Answer

To slow down development

Answer

To increase server costs

Question 4

What is the recommended approach for handling errors in async programming?

Accepted Answer

Implement structured error handling with meaningful messages

Answer

Suppress all error messages

Answer

Let errors crash the application

Answer

Log errors but never handle them

Question 5

Which practice improves the security of async programming implementations?

Accepted Answer

Input validation and principle of least privilege

Answer

Using default credentials

Answer

Disabling all logging

Answer

Granting maximum permissions to all users

Question 6

What is the benefit of continuous integration in JavaScript workflows?

Accepted Answer

It detects integration issues early through frequent builds and tests

Answer

It eliminates the need for development environments

Answer

It removes the need for code review

Answer

It automatically fixes all bugs