please answer 1,2and 3

Question 1 (Mandatory) (1 point) Saved 3.4-7 Stop-and-wait: channel utilization. Suppose a packet is 10K bits long, the channel transmission rate connecting a sender and receiver is 10 Mbps, and the round-trip propagation delay is 10 ms. What is the maximum channel utilization of a stop-and-wait protocol for this channel? 0.001 0.1 0.01 O 10.0 1.0 Question 2 (Mandatory) (1 point) 3.4-6 Cumulative ACK. What is meant by a cumulative acknowledgment. ACK (n)? O A cumulative ACK (n) allows the receiver to let the sender know that it has not received any packets with a new sequence number since the last cumulative ACK(n) was sent. O A cumulative ACK(n) acks all packets with a sequence number up to and including n as being received. A cumulative ACK (n) allows the receiver to let the sender know that it has not yet received an ACK for packet with sequence number n. Question 3 (Mandatory) (1 point) 3.2-6 Multiplexing TCP with identical port numbers. True or False: it is possible for two TCP segments with source port 80 to be sent by the sending host to different clients True False