Core Web Vitals

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1. 01 Explain what counts as the LCP element and common causes of poor LCP. Medium
2. 02 Debug a page with LCP of 4.5s - walk through your diagnostic and optimization steps. Hard
3. 03 Explain the difference between FCP and LCP. Medium
4. 04 Design a loading strategy to minimize FCP for a content-heavy blog. Hard
5. 05 Explain how INP replaced FID as a Core Web Vital and what it measures. Medium
6. 06 Debug a page with poor INP caused by a heavy event handler - how do you fix it? Hard
7. 07 Explain what causes Cumulative Layout Shift and how to prevent it for images and ads. Medium
8. 08 Design a page layout strategy that guarantees zero CLS for dynamically loaded content. Hard
9. 09 Explain what factors contribute to Time to First Byte. Medium
10. 10 Debug a high TTFB on an SSR page - what server and infrastructure factors would you investigate? Hard