Apply Dijkstra's algorithm to the graph below in order to calculate shortest paths from the node one to all other nodes. At least two types of answers are required since the links have two parameters. For each link cost definition, discuss the suitable network applications. --- IGbps, latency: 100ms IGbps, latency: 10ms 100Mbps, latency: 100ms 6. 100Mbps, latency: 10ms

You are employed as a network engineer and have been asked to analyze a communication network to determine the current data rates and ensure that the links aren't at risk of "reaching capacity." In the following figure of the network, the sender is transmitting data at a total rate of 100+50 = 150 megabits per second (Mbps). The data is transmitted from the sender to the receiver over a network of five different routers. These routers are labeled A, B, C, D, and E. The connections and data rates between the routers are labeled as x1, x2, X3, x4, and x5. B (()) Sender 100 50 A X₂ c (()), X3 X₂ X₁ E (()). X5 X5 X₂ X₂ •D ((cp)), 120 Receiver Directions In this project, you will analyze the communication network and solve for the unknown data rates using a variety of techniques. The system can be modeled mathematically as a system of linear equations by writing an equation for each node/router in the network. Each of these equations can be written by noting that the sum of inputs must…

Consider TDM-based circuit switching with 8000 frames per second and 32 time slots per frame. During each time slot 8 bits are sent. What is the shortest time possible (in seconds) to transmit a 1 Mbyte file over the given link?

Consider the following network with given line speeds and lengths:   Assume the speed of light is 2×10^8 m/s, and that the processing and queuing delays are negligible.   Node A sends a 1400-byte frame to node C through node B. Suppose Node A starts sending the first bit of the frame at t=0. Answer the following questions:   a. At what time (t=?) node B receives the frame in full (i.e. the last bit)?   b. After node B receives the frame in full, then it will start sending the frame to node C. Determine the time (t=?) when node C receives the frame in full.    c. Suppose at this time node C sends a small acknowledgment back to node A. The transmission time for the acknowledgment is negligible. Calculate at what times (t=?) the acknowledgment arrives at nodes B and A.    d. Assume after sending its frame, node A wait for the acknowledgment back from node C before sending the next frame. What is the average throughput (number of transmitted bits per second) of the data flow from node A to…

A pipelined reliable transfer protocol has a window size of N segments and runs over a link with bandwidth R=100Mbps. The link has a propagation delay t_prop=300ms. Each data packet sent over the link is of size L_D=5kBytes, whereas acknowledgements are of size L_A=50Bytes. Answer the following questions and show your work where indicated. A. What is the achieved throughput of the above pipelined protocol for N=4, 8 and 16? B. What is the link utilization for N=4, 8 and 16? Note that in class, we calculated the link utilization in terms of the time the sender is busy sending. We can also do this in terms of the achieved vs. available throughput. C. Will the achieved throughput of the above pipelined protocol grow or shrink if the packet size was increased? D. Will the achieved throughput of the above pipelined protocol grow or shrink if the propagation time was increased? E. Will the achieved throughput of the above pipelined protocol grow or shrink if the transmission rate of the link…

Consider a full-duplex 512 kbps link with length 36,000Km connecting two hosts. The data frames carry a useful payload of size 6000 bits. Assume that both ACK and data frames have 400 bits of header information, and that ACK frames carry no data. The propagation speed along this link is 3×108 m/sec. a) What is the RTT on this link? b) What is the effective useful data throughput, in kbps, when using Stop-and-Wait?

Now suppose there is only one link between source and destination, and there are 10 FDM channels in the link. The MP3 file is sent over one of the channels. What is the end-to-end delay?

You are employed as a network engineer and have been asked to analyze a communication network to determine the current data rates and ensure that the links aren’t at risk of “reaching capacity.” In the following figure of the network, the sender is transmitting data at a total rate of 100+50 = 150 megabits per second (Mbps). The data is transmitted from the sender to the receiver over a network of five different routers. These routers are labeled A, B, C, D, and E. The connections and data rates between the routers are labeled as , , , , and .   Directions   In this project, you will analyze the communication network and solve for the unknown data rates using a variety of techniques. The system can be modeled mathematically as a system of linear equations by writing an equation for each node/router in the network. Each of these equations can be written by noting that the sum of inputs must equal the sum of outputs.   To complete the project, work on the problems described below. As you…

Consider a satellite link with a capacity of 1 Mbps, bit error rate 10^-8 , and propagation delay of 270 msec. Assuming selective reject ARQ with a window of 64 and 10,000 bit frames, calculate the maximum link utilization

COMPUTER NETWORKS QUESTION : In TCP, hosts need to set the retransmission timeout (RTO) dynamically to adapt for the routing performance and optimize the bandwidth utilization. Assume that one sending hosts found from previous packet/acknowledgement pairs that the RTT between it and the receiver is 45 mS. What will be the RTO of that sending host after receiving a new packet/Ack pair witha new RTT sample = 100 mS. (assume that ?=0.875)