Instructions

  • 1. Your final score will reflect your grasp of the concepts—approach each question with precision.
  • 2. Thoroughly review each solution before proceeding to ensure full understanding.
  • 3. Final results will be available after submission to provide insights into areas for further improvement.
  • 4. Maintain academic integrity—plagiarism undermines learning and professional growth.
  • 5. Once submitted, responses are final, so ensure you’re confident in your answers.
  • 6. These challenges are designed to test practical knowledge; apply your skills as you would in real-world scenarios.

All Problems

Question

Action

What is a memory leak?

View

Which of the following can cause a memory leak?

View

What is a common sign of a memory leak in an application?

View

Which tool can help identify memory leaks in JavaScript?

View

What is a "detached DOM node"?

View

How can closures contribute to memory leaks?

View

What is the best way to prevent memory leaks caused by event listeners?

View

In what scenario would a circular reference occur?

View

Which of the following methods can help manage memory leaks?

View

When is it especially important to check for memory leaks?

View

What is a memory leak?

A method that leaks data
Memory that cannot be reclaimed
An unused variable
A syntax error

Which of the following can cause a memory leak?

Closures
Detached DOM nodes
Global variables
All of the above

What is a common sign of a memory leak in an application?

Faster performance
High CPU usage
Increased memory consumption over time
Regular garbage collection

Which tool can help identify memory leaks in JavaScript?

Chrome Developer Tools
JSLint
Prettier
ESLint

What is a "detached DOM node"?

A node that is not attached to the document tree
A node that has lost its event listeners
A node that is hidden
A node that is removed from the page

How can closures contribute to memory leaks?

By keeping a reference to outer scope variables
By creating global variables
By duplicating code
By using setTimeout incorrectly

What is the best way to prevent memory leaks caused by event listeners?

Use inline event handlers
Remove listeners when no longer needed
Use global event listeners
Avoid event listeners altogether

In what scenario would a circular reference occur?

An object referencing itself
Two objects referencing each other
A function calling itself
A variable not being used

Which of the following methods can help manage memory leaks?

Using weak maps for caching
Keeping event listeners
Avoiding the use of promises
Using global variables

When is it especially important to check for memory leaks?

When deploying to production
During initial development
After every function call
Never, it's not important