#Frontend

What is a CORS error, and how can you fix it? Please explain the concept of IP whitelisting in this context.

How do you ensure that every user has access to the updated website content after a new production deployment by clearing the cache?

What are the steps you take to build a React app, and what optimizations can you implement to enhance loading speed?

How would you sync a frontend application that initiates a transaction with a bank, considering that the initial API call doesn't confirm success or failure? Discuss your approach without needing to provide code.

Explain the concepts of components, props, and Higher-Order Components in React. How do these concepts interact with one another?