Suppose a number of users share a 4 Mbps link. Also, suppose that each user transmits continuously at 2 Mbps when transmitting, but each user transmits only 20% of the time.When circuit switching is used, how many users can be supported? No explanation is required.

If five devices are connected to the same switch and the network is operating at 1 Gbps, what is the maximum bandwidth for a single device?5 Gbps200 Mbps50 Gbps1 Gbps

Suppose with packet switching, there are three users. Find the probability that at any given time, all three users are transmitting simultaneously

Consider the scenario shown below, with four different servers connected to four different clients over four three-hop paths. The four pairs share a common middle hop with a transmission capacity of R = 300 Mbps. The four links from the servers to the shared link have a transmission capacity of RS = 50 Mbps. Each of the four links from the shared middle link to a client has a transmission capacity of RC = 90 Mbps.Assuming that the servers are all sending at their maximum rate possible, what are the link utilizations for the server links (with transmission capacity RS)? Enter your answer in a decimal form of 1.00 (if the utilization is 1) or 0.xx (if the utilization is less than 1, rounded to the closest xx)

Now suppose packet switching is used. Why will there be essentially no queuing delay before the link if two or fewer users transmit at the same time? Why will there be queuing delay if three users transmit at the same time? Be brief (2 sentences at most for each question).

An internet service provider (ISP) has a network with multiple users requiring different bandwidth allocations. The ISP needs to multiplex the traffic of 7 users, each with different bandwidth requirements, using Frequency Division Multiplexing (FDM). The bandwidth requirements of the users are as follows: User 1 needs (B+C) Mbps, User 2 needs (C+D) Mbps, User 3 needs (D+E) Mbps, User 4 needs (E+F) Mbps, User 5 needs (F+G) Mbps, User 6 needs (G+H) Mbps, and User 7 needs (H+E) Mbps. To multiplex the traffic efficiently, a guard band of (G+H+B+5) Mbps is required between each user's bandwidth allocation to avoid interference. Illustrate the configuration of the multiplexing and demultiplexing using the frequency domain with proper labeling. Compute the minimum bandwidth requirement as well.