Q:- why it is said that one of the key characteristic of distance vector routing is knowledge about the entire network while one of the key characteristic of link state routing is knowledge about the neighborhood ??

Question

it's question of adaptive routing protocol of computer network.

Comments

DVR share global data locally(to neighbours), while LSR share local data (neighbourhood data) globally.

https://en.wikibooks.org/wiki/Communication_Networks/Routing

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ohk .. it means statement DVR routing is knowledge about whole nw is correct ... but it has global data means it knows about distances between routers then why he shows infinite when other router is disconnected ,may be its silly question but now i am confused .

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@arjun please look at this : https://sarwiki.informatik.hu-berlin.de/RoutingPrinciples

look at lsr part in Overview 1st line 

"Link State Routing is not like DV based on local knowledge " .

Answer 1

The question is wrong and data is reversed.