Consider the GBN protocol with a sender window size of 4 and a sequence number range of 512. Suppose that at time t, the next in-order packet that the receiver is expecting has a sequence number of k. Assume that the medium does not reorder messages. Answer the following questions - a. What are the possible sets of sequence numbers inside the sender’s window at time t? Justify your answer. b. What are the possible values of the ACK field in all possible messages currently propagating back to the sender at time t? Justify your answer.

Match the steps of the process to julia's analysis. 1. analyze choices. current costs for making phone calls to foreign countries averages between five and ten cents a minute. 2. determine the goals. julia needs to reduce the cost of telecommunications without reducing her employees' ability to do their jobs. 3. gather data. the corporate computer network will be able to handle the increased traffic that will occur as a result of voip. 4. evaluate the decision. julia will have her it department set up voip in the smallest domestic office. 5. make the decision. julia will have employees document the benefits and problems that result from using the new technology.

The kurt vonnegut commencement speech, the neiman-marcus chocolate chip cookie recipe, and the get-well emails to the dying boy are examples of select one: a. social engineering b. hoax emails c. email viruses d. worms

What key should you press and hold to select and open multiple files at one time? enter alt control esc