A pair of nodes A and B close to each other is sending packets to

node C using IEEE $802\mathrm{.}11$ DCF$.$ Both nodes A and B have many

packets pending for node C$.$ Show on a timing diagram the sequence of

events that occurs until each of nodes A and B has received ACK for

their $1$st packet sent to C$,$ assuming that they pick their successive

backoff intervals as follows:

Node A: $8,13$; Node B: $8,6$

Assume that the propagation delay is negligible, and that the two nodes

choose their initial backoff exactly at time t$0,$ and that at time t$0$

channel changes status from busy to idle. In your timing diagram, show

one timeline each for hosts A$,$ B and C$.$ In the timeline, show the

various packets sent by the hosts, and backoff slots counted by the

hosts. Also, if a packet transmission results in a collision, indicate that

as well. Assume that RTS$/$CTS are sent prior to Data and ACK, and

that in the absence of a collision, all transmissions are received reliably