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?  

(03.02) Is (x + 7) a factor of f(x) = x3 − 3×2 + 2x − 8? Use either the remainder theorem or the factor theorem to explain your reasoning.

(02.04 MC) What is the equation of the graph below?

(03.01 LC) What is the quotient (3×3 − x2 − x − 1) ÷ (x − 1)?

(02.07 LC) Solve 2×2 − 12x + 20 = 0.

(01.08 MC) Anna and Zoe both worked at the coffee shop today. Anna’s total cups of coffee made is represented by f(x); and Zoe’s total cups of coffee made is represented by g(x). Use the functions below to write a function that represents the total cups of coffee they made today. f(x) = 5x − 2g(x) = 4x + 1

(03.03 LC) How does the graph of g(x) = (x − 1)3 + 5 compare to the parent function f(x) = x3?

(03.01 MC) What is the remainder when (3×4 + 2×3 − x2 + 2x − 9) ÷ (x + 2)?

Which in the following does NOT belong to the TCP/IP 5-layer model?

(01.07 LC) Simplify the expression: (3 − 7i)(2 − 5i).