Fill in the blank: ___ happens when the server tells a web browser to keep the files it downloads, so it doesn't have to download them again in the future.
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Correct answer: Client-side caching.
Why this is the answer
Client-side caching instructs the browser to store downloaded files locally so that repeat visits do not require re-downloading. This reduces HTTP requests, improves page load speed, and enhances user experience. Efficient client-side caching contributes to faster rendering and better Core Web Vitals performance. It also helps search engines crawl pages more efficiently.
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