4. Host A transmits three packets back-to-back with an MSS of 1000 Bytes. The segments are transmitted back-to-back in a pipelined fashion: What is the sequence number given to the first segment? b. What is the sequence number given to the second segment? What is the sequence number given to the third segment? a. c. 5. What are the TWO mechanisms used by TCP to detect that a segment may have been lost, requiring a retransmit