How much data does the receiver typically acknowledge in an ACK among the first ten data-carrying segments sent from the client to gaia.cs.umass.edu? Group of answer choicesEach acknowledgment acknowledges exactly 1448 bytes of payload data.Some ACKs acknowledge zero bytes of data (these are negative ACKs) and some ACKs acknowledge 1448 bytes of data.Some ACKs acknowledge 1448 bytes of data (corresponding to a single segment), and other ACKs acknowledge 2896 bytes of data (corresponding to two segments)

Can you identify cases where the receiver is ACKing every other received segment (see Table 3.2 in the text) among these first ten data-carrying segments?Group of answer choicesNo. Each of the first 10 ACKs acknowledges exactly 1448 bytes of payload data.Yes! After the first ACK every remaining ACK acknowledges two segments' worth of payload data.Yes! Every ACK acknowledges two segments' worth of payload data.

How did gaia.cs.umass.edu determine the value used in the Acknowledgment number field? Group of answer choicesThe value of the ACK number field is the sequence number of the next expected byte of data to be received at the server on the client-to-server direction of this connection -- one higher that the sequence number used as the sequence number in the initial SYN segment sent from client to server.Since no payload data has yet to be transmitted, there is no data to be ACKed, and so the value in this field is not important.Since no payload data has yet to be transmitted, there is no data to be ACKed, and so the value in this field is 0.

A TCP receiver must send an acknowledgement for every segment it receives.Group of answer choicesTrue: for the sender to know that the bytes in each segment have been received the receiver must ACK each segment individually.False: TCP uses cumulative acknowledgements, so the receiver need only send an acknowledgment for the bytes in the segment with the largest sequence number that has been successfully received.

7.3-1. Overlapping 802.11 wireless networks, with ACKs (d)Overlapping wireless senders with ACKs. Now suppose we are again in the wireless scenario, and that for every data message sent from source to destination, the destination will send an ACK message back to the source (e.g., as in TCP). Also suppose that each ACK message takes up one slot. What is the maximum rate at which data messages can be transferred from C to A, given that there are no other messages between any other source/destination pairs? [Note that successful ACKs do not count towards data message throughput].Group of answer choices1 message/slot.0.25 messages/slot (i.e., one message every four slots).0.5 messages/slot (i.e., 1 message every two slots).2 messages/slot.

TCP sequence numbers and ACKs (2). Suppose that as shown in the figure below, a TCP sender is sending segments with 100 bytes of payload.  The TCP sender sends five segments with sequence numbers 100, 200, 300, 400, and 500.  Suppose that the segment with sequence number 300 is lost.  The TCP receiver will buffer correctly-received but not-yet-in-order segments for later delivery to the application layer (once missing segments are later received). Complete the sentences below ....After receiving segment 100, the receiver responds with an ACK with value: After receiving segment 200, the receiver responds with an ACK with value: After receiving segment 500, the receiver responds with an ACK with value: After receiving the retransmitted segment 300, the receiver responds with an ACK with value: