$($a$)$ Cy proposes to send the data through the Internet. He realizes that he can have exclusive and full$-$bandwidth use of UC Davis's CENIC $400$G connection to send the data to Jeff. What is Cy$\text{'}$s bandwidth $($bits$/$s$)?$ Roughly, how long does it take the first bit of data to arrive $($latency$)?("$Roughly$"$ means $"$is the elapsed time on the order of milliseconds or seconds or minutes or hours".$),$ How long does it take him to send all the data to Jeff?

$($b$)$ Eva has a number of friends with wireless hubs on the route from Davis to Seattle running the new $802\mathrm{.}11$ax $($Wi$-$Fi $6$E$)$ wireless protocol. She can send data from friend to friend until it reaches Jeff, all using $802\mathrm{.}11$ax connections, all running at theoretical$-$peak $802\mathrm{.}11$ax bandwidth $($the "maximum linkrate"$).$ What is Eva's bandwidth? Roughly, how long does it take the first bit of data to arrive $($latency$)?$ How long does it take her to send all the data to Jeff?

$($c$)$ Lem puts $250020TB$ hard drives in the back of a large pickup truck $($this is about $2$ tons of hard drives$)$ and drives them to Jeff. What is Lem's bandwidth? How long does it take the first bit of data to arrive $($latency$)?$ How long does it take him to bring all the data to Jeff? $($Do not consider transfer time from disk to Jeff.$)$

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$($d$)$ Independent contractor Louis wants to achieve maximum bandwidth on the road by transporting maximum data. He packs every cubic millimeter of space in the rear trunk $($not counting seat area$)$ of a $2021$ Tesla Model S with Micron $1\mathrm{.}5$ TB microSDXC cards. What is Louis's achieved bandwidth on a similar trip to Amazon? $($Do not consider transfer time from SD cards to Jeff.$)($Note Louis is transporting $[$much$]$ more data than necessary; thus this part is not directly comparable to the other parts.$)$