Question 31 3 pts What is the probability that 2 buses arrive in the first half of an hour and then no bus arrives in the second half of the hour? O 0.152 0.228 0.0303 O 0.0675 Question 32 3 pts The next 4 questions are based on the following description: In all following calculations, assume K denotes 103 and M denotes 10. Assume RTT is 100 ms, packet size is 1.5 KB, and there is one RTT of "handshaking" before data is sent. What is the total time required to transfer a 3 MB file if the bandwidth is 1 Mbps, and data packets can be sent continuously? about 12 seconds about 42.3 seconds about 2.73 seconds about 24.15 seconds