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9.4. The Internet

The Internet is intrinsically less predictable than well-characterized private networks because it was built by a heterogeneous group with many different motives, budgets, and technical skills. This is not to say you can't make some good assumptions about the throughput and latency of the Internet based on physics, the behavior of the components, and past experience.

While the latency of the Internet can be arbitrarily high, it has a fixed lower boundary given by the speed of light. The minimum latency for any information to travel 2,000 miles, for example, is (1 second / 186,000 miles) × 2,000 miles = 10.8 milliseconds


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