which router will become the backup designated router (BDR)?

Refer to the Exhibit.

In the exhibit, six routers (R1, R2, R3, R4, R5, and R6) are attached to a single Ethernet
LAN and configured with addresses in the same subnet. All devices boot at the same time. Which
router will become the designated router (DR), and which router will become the backup
designated router (BDR)?

Refer to the Exhibit.

In the exhibit, six routers (R1, R2, R3, R4, R5, and R6) are attached to a single Ethernet
LAN and configured with addresses in the same subnet. All devices boot at the same time. Which
router will become the designated router (DR), and which router will become the backup
designated router (BDR)?

A.
DR:R3
BDR: R4

B.
DR: R4
BDR: R3

C.
DR: R6
BDR: R1

D.
DR: R6
BDR: R2

Explanation:

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dnx

dnx

D

Existen dos criterios para definir el DR y el BDR:
1er criterio: La prioridad, este va de 0 a 255, el que tiene una mayor prioridad es el elegido, la prioridad por defecto si no menciona es 128. Prioridad 0, significa que no puede ser elegido como DR o BDR.
2do criterio: El RID, a mayor RID mejor (numéricamente hablando).

Nota: Entre la prioridad y el RID, se debe considerar a la prioridad como la función que define el DR y BDR.

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