The prompt
Estimate the monthly bandwidth cost for a video-call product with 5M monthly actives spending 2 hours/week on calls. Walk through assumptions and where the unit economics break.
Concepts this question tests
How to practice it in PrepOS
PrepOS's adaptive queue surfaces this question when you calibrate to a matching target level and your weakest concepts overlap with what it tests. Open the practice simulator and select the round type to start a rep with this prompt.
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