Question & Answer: You have trained your dog, Bernie, to carry twenty 64Gbytes USBs instead of a flask of wine……

Suppose in the range of “x km” Bernie has higher data rate than transmission line.

To reach “X km ” Bernie will take t= x/(25km/hour) time

Traveling speed of Benie in Km/second is 25/3600= 1/144 seconds (in one hour there are 3600 second)

t=x/(1/144)=x*144 secomds {t= x/v in second, v is speed of Bernie}

Bernie can fetch 12 * 64Gbytes in x*144 seconds

So the transmission arte of Bernie is (12*64)/(x*144) Gbps

and this must be higher tha the transmision line

i.e.  (12 * 64) / (x * 144) Gbps > 1Gbps

 x < 5.33 Km

So in the range of 5.33 km Bermie have a higher data rate than a transmission line whose data rate (excluding overhead) is 1Gbps.

(i)

If the bernie seed is halved than t = x / (1/(2*144))=x /(1/288) = x*288 seconds

So

(12 * 64) / (x * 288) Gbps > 1Gbps

 x < 2.66 Km

So in the range of 2.66 km (half of original ) Bermie have a higher data rate than a transmission line whose data rate (excluding overhead) is 1Gbps.

(ii) each USBs capacity is doubled

than

(12 * 128) / (x * 144) Gbps > 1Gbps

 x < 10.66 Km

So in the range of 10.66 km (double of original ) Bermie have a higher data rate than a transmission line whose data rate (excluding overhead) is 1Gbps.

(iii)

(12 * 64) / (x * 144) Gbps > .5Gbps

 x < 10.66 Km

So in the range of 10.66 km (double of original ) Bermie have a higher data rate than a transmission line whose data rate (excluding overhead) is 0.5 Gbps.