Q$5.($CO$5)$ Suppose two nodes $P$&$Q$ each having $500$ bit frame to send each other attached to $1Km$ long

cable. $20$ Mbps CSMA$/$CD LAN having propagation speed $200\frac{m}{s}.$ Next, $P$ starts transmission at $t=0$ & $Q$ at

$t=2.$ After first collision $P$ draws $K=0$ & $Q$ draws $K=1$ in exponential back$-$off process $[5$ Marks$]$

a$)$ At what time both detect collision $($in seconds$)?$

b$)$ At what time both finish sending jamming signal $($in seconds$)?$

c$)$ How much data has been sent by both the stations before detecting collision $($in seconds$)?$

d$)$ At what time does $P^{\text{'}}$ s frame fully received at $Q($in seconds$)?$

e$)$ What is efficiency of CSMA$/$CD in above scenario?