On the figure below the sender has seven pkts to send (0,1,2..6) and a window N 3. Answer the following questions if the protocol implements a pipelined transport protocol with GBN (cumulative ack) Fill out the Pkt and Ack numbers (short and long blanks) Draw a rectangle to show the sender window a. b. sender window (N-3) sender recerver 0123456 0123456 01 23 send pkt 0 send pkt 1 send pkt 2loss rcv pkt 0, deliver, send ack 0 rcv pkt 1, deliver, send ack 1 rcv pkt 2, deliver, send ack 2 3456 loss 0123456 rcv ack 2, send pkt send pkt- send pkt rcv pkt__, deliver, send ack rcv pkt__, deliver, send ack 0123456 0123456 rcv ack-send pkt- rcv ack rcv pkt_, discard, (re)send ack_ discard duplicate ACk timeout send pkt- send pkt_ rcv pkt _, deliver, send ack rcv pkt _, deliver, send ack rcv ack rcv ack 0123456 0123456