Consider the network shown below with the given link costs. Initially each node knows only its neighbors and cost of the links to them. The distance-vector routing (DV) algorithm is used to compute the least cost paths for all source-destination pairs. The network connectivity and link costs are stable. The routing updates occur in rounds. In an update round, each node updates all of its neighbors with the nodes it currently knows after the previous round and the distances to them. Match each of the statements or questions in the left column with the most appropriate response from the right column. V -W 9

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
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Consider the network shown below with the given link costs. Initially each node knows only its neighbors and cost of the links to them. The distance-vector routing (DV) algorithm is used to compute the
least cost paths for all source-destination pairs. The network connectivity and link costs are stable. The routing updates occur in rounds. In an update round, each node updates all of its neighbors with
the nodes it currently knows after the previous round and the distances to them.
Match each of the statements or questions in the left column with the most appropriate response from the right column.
2
Transcribed Image Text:Consider the network shown below with the given link costs. Initially each node knows only its neighbors and cost of the links to them. The distance-vector routing (DV) algorithm is used to compute the least cost paths for all source-destination pairs. The network connectivity and link costs are stable. The routing updates occur in rounds. In an update round, each node updates all of its neighbors with the nodes it currently knows after the previous round and the distances to them. Match each of the statements or questions in the left column with the most appropriate response from the right column. 2
v Initially, before any updates, node U knows distances to what other nodes?
v After one round of updates, U knows distances to what other nodes?
A. 3
B. Nodes V, W, and X
C. Nodes V, X, and Y
What is the number of rounds needed for U to know distances to all other nodes in the
network?
D. 2
v What is the least-cost path from U to Y?
E. Nodes V, W, and Y
F. Node V
Transcribed Image Text:v Initially, before any updates, node U knows distances to what other nodes? v After one round of updates, U knows distances to what other nodes? A. 3 B. Nodes V, W, and X C. Nodes V, X, and Y What is the number of rounds needed for U to know distances to all other nodes in the network? D. 2 v What is the least-cost path from U to Y? E. Nodes V, W, and Y F. Node V
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