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Exam details
Frontend performance is how quickly and smoothly a web application loads, renders, and responds to user input.
It affects user satisfaction, accessibility, SEO, conversion, and perceived product quality.
TTFB measures how long it takes the browser to receive the first byte of the response after making a request.
LCP measures when the largest visible content element finishes rendering, indicating perceived load speed.
INP measures how responsive a page feels by tracking the delay between an interaction and the next visual update.