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← Courses›System Design for Python JuniorsModule 5 · Real-World Case Studies›Predict: back-of-envelope for global LBpredict71 / 101
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📝 **Question:** Tokyo user → us-east round-trip is ~200ms; same user → Tokyo region is ~5ms. Single API call extra latency from running only us-east? 📋 Pick the right answer. 💡 **Hint:** Re-read the theory above if unsure.

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🔮 Predict the output

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# RTT Tokyo ↔ us-east ≈ 200ms
# RTT Tokyo ↔ Tokyo region ≈ 5ms
# Difference per call: ~195ms
print('~195 ms per call')

What will the program print? Write here:

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