Imagine that you have trained your St. Bernard, Bernie, to carry a box of three USB flash drives instead of a?

Imagine that you have trained your St. Bernard, Bernie, to carry a box of three USB flash drives instead of a flask of brandy. These drives each contain 16 gigabytes. The dog can travel to your side, wherever you may be, at 18 km/hour. For what range of distances does Bernie have a higher data transfer rate than a transmission line whose data transfer rate (excluding overhead) is 150 Mbps?