$6$:$28$

eclass.bethlehem.edu

Time left $0$:$30$:$38$

Question $23$

Not yet answered

Marked out of $1\mathrm{.}00$

Flag question

The Stop$-$And$-$Wait ARQ, Go$-$Back$-$N ARQ, and the Selective Repeat ARQ are for channels.

Select one:

a$.$ neither $($a$)$ nor $($b$)$

b$.$ either $($a$)$ or $($b$)$

c$.$ noiseless

d$.$ noisy