The following figure shows a TCP transaction. Assume Host A always has data to send, and each packet has size 40 Bytes. Assume Host A has a send window of 80 Bytes, that is, it can send two “in-flight” packets maximum. Answer the following questions. Notes: Pipelining using Go-Back-N  At the time marked “1”, i.e., when the first packet times out, will Host A send any packet? if your answer is no, explain why not; if your answer is yes, how many packets will be sent, what are the sequence numbers of them?  At the time marked “2”, i.e., when the ACK of the 2nd packet is received by Host A, will Host A send any packet? if your answer is no, explain why not; if your answer is yes, how many packets will be sent, what are the sequence numbers of them?  

(01.07 LC) Simplify the expression: (9 + 3i) − (4 + 5i).

The requirement that individuals select mates from outside certain groups is known as

(03.02 LC) Given a polynomial f(x), if (x + 7) is a factor, what else must be true?

(02.01 MC) Factor 2×2 − 10x − 48 completely.

What term refers to maintaining an employee after discovering some negative information not disclosed during the screening phase of the employment process? 

Which of the following is a benefit of using work samples as a selection procedure?