Q.5) Consider the network shown in the figure below, with three links, each with atransmission rate of 1 Mbps, and a propagation delay of 1 msec per link. Assume the lengthof a packet is 1000 bits.-Link 2+Link 3→What is the end-end delay of a packet from when it first begins transmission on link 1, until isit received in full by the server at the end of link 3?Assume store-and forward packet transmission.+Link 1-

To calculate the end-to-end delay of a packet from the time it first begins transmission on link 1…

Answered: Q.5) Consider the network shown in the…

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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Suppose nodes A and B are on the same 10 Mbps broadcast channel, and the propagation delay between the two nodes is 325 bit times. Suppose CSMA/CD and Ethernet packets are used for this broadcast channel. Suppose node A begins transmitting a frame and, before it finishes, node B begins transmitting a frame. Can A finish transmitting before it detects that B has transmitted? Why or why not? If the answer is yes, then A incorrectly believes that its frame was successfully transmitted without a collision. Hint: Suppose at time t=0 bits, A begins transmitting a frame. In the worst case, transmits a minimum-sized frame of 512+64 bit times. So A would finish transmitting the frame at t=512+64 bit times. Thus, the answer is no, if B's signal reaches A before bit time t=512+64 bits. In the worst case, when does B's signal reach A?
Consider the network illustrated in the Figure below, B. Propagation Nodal Queuing Transmission processing (waiting for transmission) Assume the two hosts on the left of the figure start transmitting packets of 1200 bytes at the same time (at time=0) towards Router B. Suppose the link rates between the hosts and Router A are 3Mbps and the link rate between router A and router B is 4Mbps. One host link has a 2ms propagation delay and the other has a 3ms propagation delay. Router A has a nodal processing delay of 0.2ms. A. Calculate the time router A receives the last bit of the first packet: ms B. Calculate the time router A receives the last bit of the second packet: ms C. Calculate the time the last bit of the first packet leaves router A: ms D. Calculate the queueing delay (if any) of the second packet: ms E. Calculate the time the last bit of the second packet leaves router A: ms Please calculate the delays in ms (millisecond), and fill in the blank spaces with numbers only. For…
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…
1. Consider a path from host A to host B through a router X as follows: A- -X-B The capacity of the link AX is denoted Ra, while the capacity of the link XB is denoted Rb in units of [bits/s]. Assume that Ra Ri. Is it possible that the second packet queues at input queue of the second link? Explain. Now suppose that host A sends the second packet T seconds after sending the first packet. How large must T be to ensure no queueing before the second link? Explain.
Consider a packet of length L that begins at end system A and travels over three links to a destination end system. These three links are connected by two packet switches. Let d, s, and R denotes the length, propagation speed, and the transmission rate of link i, for i=1,2,3 . The packet switch delays each packet by d . Assuming no queuing delays, in terms of d, s , R, (i=1,2,3), and L, what is the total end-to-end delay for the packet? Suppose now the packet is 1,500 bytes, and the propagation speed on all three links are 3125km/sec, 10000 km/sec, and 3333km/sec respectively. The transmission rates of all three links are 2 Mbps, the packet switch processing delay is 3 msec, the length of the first link is 5,000 km, the length of the second link is 4,000 km, and the length of the last link is 1,000 km. For these values, what is the end-to-end delay? In the above problem, suppose R1=R2=R3=R and dproc=0. Further, suppose the packet switch does not store-and-forward packets but…
How would you write a system of linear equations based on the given scenario and directions? Scenario 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 . Directions For this assignment, 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…
Assume that an end-to-end communications system is made up of three networks with date rate in Mbps ρ1, ρ2, and ρ3, respectively. Ignoring the other delay components, what is the total end-to-end delay to transmit a packet size of λ?
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2. Consider a slotted TDM hierarchical network in which there are 8 computers sharing a 10 Mbps channel to a router R1, sending packets to R1 which must all be forwarded by R1 over an outgoing link (called the MAN link), as shown in Figure 1. Computers A-H always have packets waiting to be sent, so no timeslot on the shared LAN is idle. Ignore the propagation delay on the LAN. The MAN link outgoing from R1 is a 100 Mbps link. The network layer protocol in use has a PDU with exactly 40 bytes of header and exactly 200 bytes of payload (SDU). The DLC layer protocol in use on the LAN has a PDU with exactly 40 bytes of header and 20 bytes of trailer. The DLC layer protocol in use on the outgoing link from R1 has a PDU with 40 bytes of header and no trailer. The physical layer does not impose any bit overhead in either channel. Use 1 Mbps = 1000000 bps. B D E F G H R1 R2 Figure 1 (a) What is the transmission delay of a bit for Computer A? (b) What is the transmission delay of a DLC PDU for…
Networking & Data Communcations
In this problem you will be doing some elementary calculations oftransmission and propagation delays.Consider two hosts, A and B that are connected by a transmissions link of2.1 Mbps. Assume that packets are of length 2.0 Kb (Kilobits) and thelength of the link is 100Km. a). Now suppose that node C is connected to node B also by a 2 Mbps, 100Km link. How long does it take from when the first bit is transmitted by Ato when the last bit is received at C, assuming B operates in a store-andforward manner?
A frame of 1200 bytes travel through five switches along the path. Each link has a bandwidth of 100 Mbps, a length of 100 m, and a propagation speed of 2 × 10*8 m/sec. Assuming a queuing and processing delay of 2 ms at each switch, what is the approximate end-to-end delay for this packet?

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