The Backup DIS is called?

To eliminate the need for adjacent routers on broadcast networks to form n(n-1)/2 adjacencies, IS-IS defines a pseudonode or Designated Intermediate System, DIS. All routers on the broadcast medium form an adjacency with the DIS. The Backup DIS is called…?

To eliminate the need for adjacent routers on broadcast networks to form n(n-1)/2 adjacencies, IS-IS defines a pseudonode or Designated Intermediate System, DIS. All routers on the broadcast medium form an adjacency with the DIS. The Backup DIS is called…?

A.
Redundant DIS

B.
BDR

C.
There is no concept of a backup DIS in IS-IS

D.
Designated Redundant System

Explanation:
There is no concept of a backup DIS in IS-IS.



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