Host A sends 6 packets to Host B using TCP protocl with each packet10 bytes long, and starts with sequence number 90. We assume the third packet is lost and there is no delayed ACK, but all the six packets arrive at Host B finally. How many ACKs does Host B sends back to Host A (5 points)? What is the acknowledgement number for each ACK packet from Host B to Host A (15 points)? (Result: 5 points, Proof: 10 points) (Proof is needed)

What is stored in str after the following code executes? string str = "computer science"; int i = 0; while (i < 8) { if (str. indexof("m") < i) { str = str. substring(0, 2) + str; } i += 2; } computer science cocomputer science cococomputer science cocococomputer science computer scienceco

This os integrated the processing power of windows nt with the easy-to-use gui of windows 98. windows 2000 windows 3.11 windows for workgroups windowa millennium edition

Write a method so that the main() code below can be replaced by the simpler code that calls method original main(): public class calcmiles { public static void main(string [] args) { double milesperhour; double minutestraveled; double hourstraveled; double milestraveled; milesprhour = scnr. nextdouble(); minutestraveled = scnr. nextdouble(); hourstraveled = minutestraveled / 60.0; milestraveled = hourstraveled * milesperhour; system. out. println("miles: " + milestraveled); } }