Used to provide reliable transport 1) alternating bit protocol (abp) and retransmission timers are of segments. the figure below shows a time sequence diagram of abp and retransmission a b data. req(a) d(0,a) data. ind(a) c(oko) data. req(b) d(1, b) retransmission timer d(1,b) data. ind(b) c(ok1) duplicate detected c(ok1) data. req(c) d(0, c) retransmission timer d(o, c) data. ind(e) timers being implemented. explain how retransmission timers and the alternating bit protocol work. considera link connecting two host at 10 mbits/secwith a propagation delay between each host of 250ms. if the hosts send 1000 bit segments, what is the maximum a. b. throughput, if alternating bit protocol is being implemented? why is this bad?

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2. fluorine and chlorine molecules are blamed fora trapping the sun's energyob forming acid rainoc producing smogod destroying ozone molecules

Write a program that has a conversation with the user. the program must ask for both strings and numbers as input. the program must ask for at least 4 different inputs from the user. the program must reuse at least 3 inputs in what it displays on the screen. the program must perform some form of arithmetic operation on the numbers the user inputs. turn in your .py file as well as a screenshot of your program's output. include comments in your code to explain how it works an example program run might look like (have fun with this and be creative): ‘what is your name? ’ “josh” ‘, josh. what is your favorite color? ’ “green” ‘mine too. do you also like ice cream? ’ “no” ‘josh, how old are you? ’ “40” ‘ and how many siblings do you have? ’’ “3” ‘that means you are one of 4 kid(s). is green the favorite color of anyone else in your house? ’