Q1: Why is the transmission rate or the bandwidth measured in Bps, why do we need the "seconds" part if it only measures the amount if bits it can hold?
If transmission rate is the amount of bits the link can handle at once, and the propagation speed is the speed at which the bits travel through the link, does the transmission rate depend on propagation speed?
Q2:
If propagation speed is high, it means it can propagate the bits whenever the router pushes them in and so, can hold more in a second, or do packets travel together, meaning the router has to push whole packet before the bits can start propagating?