**5.03-5. Dijkstra's Algorithm (3, part 5).**Consider the network shown below, and Dijkstra’s link-state algorithm. Suppose that Dijkstra's algorithm has been run to compute the least cost paths from node E to all other nodes. Now suppose that source node E has a packet to send to destination node A. What is the first router to which E will forward this packet on its path to A?[Diagram Description]- The network diagram consists of six nodes: A, B, C, D, E, and F.- The connections between nodes and their respective weights are: - A to B: 3 - A to C: 4 - B to C: 8 - B to E: 10 - C to D: 4 - C to E: 2 - D to E: 4 - E to F: 2 - F to B: 4[Multiple Choice Options]- D- C- F- BTo answer the question, one would evaluate the shortest path from node E to node A, based on the computed least cost paths from the algorithm.

The best routes from the source to every node are determined using Dijkstra's link state method. The…

5.03-5. Dijkstra's Algorithm (3, part 5). Consider the network shown below, and Dijkstra's link-state algorithm. Suppose that Dijkstra's algorithm has been run to compute the least cost paths from node E to all other nodes. Now suppose that source node E has a packet to send to destination node A. What is the first router to which E will forward this packet on its path to A? U OF O B A 3 B 8 10 E 4 2 F

5.03-5. Dijkstra's Algorithm (3, part 5). Consider the network shown below, and Dijkstra's link-state algorithm. Suppose that Dijkstra's algorithm has been run to compute the least cost paths from node E to all other nodes. Now suppose that source node E has a packet to send to destination node A. What is the first router to which E will forward this packet on its path to A? U OF O B A 3 B 8 10 E 4 2 F

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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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…
Consider the network shown below, and Dijkstra's link-state algorithm. Suppose that Dijkstra's algorithm has been run to compute the least cost paths from node E to all other nodes. Now suppose that source node E has a packet to send to destination node A. What is the first router to which E will forward this packet on its path to A? O C O O O LL B A 3 2 B 8 D 10 E 4 2 F
Suppose two TCP connections share a path through a router R. The router's queue size is six segments; each connection has a stable congestion window of three segments. No congestion control is used by these connections. A third TCP connection now is attempted, also through R. The third connection does not use congestion control either. Describe a scenario in which, for at least a while, the third connection gets none of the available bandwidth. and the first two connections proceed with 50% each. Does it matter if the third connection uses slow start? How does full congestion avoidance on the part of the first two connections help solve this? 10:33 am Type a message Dorcon 1 tahir re
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Will there be any collision between two nodes for given scenario? Given that two nodes start to transmit a packet of length "L" at the same time at the rate "R". The propagation delay between the two nodes is "dprop".
Suppose A is connected to B via an intermediate router R, as in the previous problem. The A-R link is instantaneous, but the R–B link transmits only one packet each second, one at a time (so two packets take 2 seconds). Assume A sends to B using the sliding window protocol with SWS = 4. For Time = 0, 1, 2, 3, 4, state what packets arrive at and are sent from A and B. How large does the queue at R grow?
Suppose a routing algorithm identifies paths that are “best” in the sense that: (1) minimum number ofhops, (2) minimum delay, or (3) maximum available bandwidth. Identify conditions under which the pathsproduced by the different criteria are the same? are different?
Assume now that between A and B there is a switch S that uses store and forward. The distance from A to S is m meters and from S to B 2m meters. The link speed between A and S is R bps and between S and B R/2 bps. A has a supply of 6 packets to send to B using UDP. The switch buffer can accommodate 3 packets including the one being transmitted (until it finishes its transmission). Will there be packet losses at the switch buffer. Which packets (number packets 1, 2, 3, ...). Draw an annotated time-space diagram to illustrate this data transmission. (you should roughly respect the scales in your drawing).
c) Given graph G = (N,E), where N is the set of routers and E is the set of links. Using Dijkstra's link-state routing algorithm ommute the least cost path from node U to all other nodes and show the resulting least-cost-path tree from U U 2 2 3 Y 2 2 3
hdet b) Consider sending a packet contains 1100 bits from Host A to Host B in a store and forward nerwork. There are 10 links (and 9 routers) between A and B, and the links are congested (there Is a queuing delays). Assume propagation delay over the links are negligible. As a packet travels along the route, it encounters an average of 5 packets already waiting in the queue to be transmitted when it arrives at each router, How long does it take for the packet to get to the receiver if the nodes transmit on a "first come first served" basis (in ms)?
Each active interface of Distance vector gets frequent transmissions of the whole routing table that Distance vector maintains. The link status protocol broadcasts information about the state of a router's own connections to all other routers in the network. Each statement has two ideal examples that show how the Link state and the Distance vector may be utilized in a number of circumstances.