How long does it take a packet of length $1,000$ bytes to propagate over a link of distance$2,500$ km$,$ propagation speed $2\mathrm{.}5$x$108$ m$/$s$,$ and transmission rate $2$ Mbps$?$ More generally, howlong does it take a packet of length L to propagate over a link of distance d$,$ propagation speeds, and transmission rate R bps$?$ Does this delay depend on packet length? Does this delaydepend on transmission rate?