6.For the network shown below give global distance-vector tables like those in the textbook when(a) Each node knows only the distances to its immediate neighbors.(b) Each node has reported the information it had in the preceding step to its immediate neighbors.(c) Step (b) happens a second time.A352B113EF7.Consider the network from the previous problem running distance-vector routing has already achievedconvergence. At some time link B-C fails.a) Give the routing tables at A an Take a screenshot C have reported the news.b) Give the routing tables at A and D after their next mutual exchange.

(a) Each node knows only the distances to its immediate neighbor: Information stored distance to reach node at node A B C D E F A 0 5 ∞ 3 ∞ ∞ B 5 0 1 ∞ 1 ∞ C 0 1 0 2 ∞ 3 D 3 ∞ 2 0 ∞ ∞ E ∞ 1 ∞ ∞ 0 4 F ∞ ∞ 3 ∞ 4 0 Explanation : Each cell in the table shows the distance it takes for each node to travel to the next node. As we can see to reach B from A it takes 5. From A to A the distance will be 0 since both are the same nodes then from A to C, E and F it will be infinity since each node only knows the distance of its neighbor. From A to D as we can see in the figure it will be 3.(b)Each node has reported the information it had in the preceding step to its immediate neighbors: Information stored Distance to reach node at node A B C D E F A 0 5 6 3 6 ∞ B 5 0 1 3 1 5 C 5 1 0 2 2 3 D 3 3 2 0 5 E 6 1 2 ∞ 0 4 F ∞ 4 3 5 4 0 Explanation : Each cell in the table shows the distance it takes for each node to travel to the next node. As we can see to reach B from A it takes 5. From A to A the distance will be 0 since both are the same nodes then from A to F it will be infinity since each node only knows the distance of its neighbor. Now from A to E and C it will be 6 and 6 respectively since here each node knows has reported the distance from the previous step. From A to D as we can see in the figure it will be 3.(c) Step (b) happens a second time: Each cell in the table shows the distance it takes for each node to travel to the next node. As we can see to reach B from A it takes 5. From A to A the distance will be 0 since both are the same nodes then from A to F it will be 10 since each node now knows the distance to all nodes as the previous step has occurred twice. Now from A to E and C it will be 6 and 6 respectively since here each node knows has reported the distance from the previous step. From A to D as we can see in the figure it will be 3

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6. For the network shown below give global distance-vector tables like those in the textbook when (a) Each node knows only the distances to its immediate neighbors. (b) Each node has reported the information it had in the preceding step to its immediate neighbors. (c) Step (b) happens a second time. A 5 2 1 3 E F 7. Consider the network from the previous problem running distance-vector routing has already achieved convergence. At some time link B-C fails. a) Give the routing tables at A ancTake a screenshot C have reported the news. b) Give the routing tables at A and D after their next mutual exchange.

6. For the network shown below give global distance-vector tables like those in the textbook when (a) Each node knows only the distances to its immediate neighbors. (b) Each node has reported the information it had in the preceding step to its immediate neighbors. (c) Step (b) happens a second time. A 5 2 1 3 E F 7. Consider the network from the previous problem running distance-vector routing has already achieved convergence. At some time link B-C fails. a) Give the routing tables at A ancTake a screenshot C have reported the news. b) Give the routing tables at A and D after their next mutual exchange.

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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Types Of Protocols

A network protocol is a collection of rules that governs the exchange of data between devices connected to the same network. In other words, network protocols are rules that specify how devices communicate or transfer data over a network. The sender and receiver systems must obey the standards to facilitate communication between them.

Question

6.
For the network shown below give global distance-vector tables like those in the textbook when
(a) Each node knows only the distances to its immediate neighbors.
(b) Each node has reported the information it had in the preceding step to its immediate neighbors.
(c) Step (b) happens a second time.
A
3
5
2
B
1
1
3
E
F
7.
Consider the network from the previous problem running distance-vector routing has already achieved
convergence. At some time link B-C fails.
a) Give the routing tables at A an Take a screenshot C have reported the news.
b) Give the routing tables at A and D after their next mutual exchange.

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