The Role of Bandwidth

The size of this included image is 84kB

84 kB = 84 kilo Bytes = 84 * 1024 * 8 = 688 128 bits

1kB = 1024 B   / 1 Bytes = 8 bits

The time to transfer the image = size / bandwidth

by a modem at 56 kbps = 56 000 bit per second

time = 688 128 / 56 000 = 12.28 secondes

on TransACT "broadband" : 688 128 / 512 000 = 1.3 s