Consider the sliding window protocol using normal Frames and ACKs shown in the figure below. Here are some facts: The sender takes 1 ms between two consecutive frames and the timeout for each frame is 4 ms; The last frame the sender needs to send is F9. Frame F7 and ACK A6 are lost. (a) Fill all the Frame sequence numbers (e.g., F5), ACK sequence numbers (e.g., A5), LARs, LFSs, LFRs, LAFs, SWS blocks, and RWS blocks in the following figure that you feel necessary.

(a) Fill all the Frame sequence numbers (e.g., F5), ACK sequence numbers (e.g., A5), LARs, LFSs, LFRs, LAFs, SWS blocks, and RWS blocks in the following figure that you feel necessary.

(b) Draw only the timeline figure (not the sliding windows) in case the receiver sends selective ACKs.

SWs LAR- 4. LFS 5 LARLFS 6 RWS AS LAR- LFSF7 LFR-5, LAF-9 LFR- 6, LAF-10 F9 LAR.LFS LFR LAF LAR- LES- LFR.LAF LAR .LFS LARLFS LFR.LAF F9 LAR- 6,LFS LFR-9. LAF LFR LAF LFR LAF LAR- .LFS- LARLFS LAR-9, LFS