The pipe and the width of a bit

Bandwidth-delay product · problems P25, P26, and P27 (Kurose)

Link A → B: the file is poured into the pipe

file bits head (first bit) tail (last bit) segment magnified in the zoom view (click or drag on the pipe)
t = 0 s
Pipe capacity, R·dprop
Bits on the link now
Maximum bits on the link during transmission
Width of a bit, s/R
Portion of the file that fits at once

Magnifier

Compare 2 Mbps and 1 Gbps