Juniper Exam JN0-363 Topic 13 Question 28 Discussion

Actual exam question for Juniper's JN0-363 exam

Question #: 28
Topic #: 13

You are bringing a new network online with three IS-IS routers using default Junos election priorities. The routers are configured as Level 2 only IS-IS routers. Which statement is true about the DIS election in this scenario?

AThe router with the highest MAC address will be elected as the DIS.

BThe router with the highest numerical lo0 IP address will be elected as the DIS.

CThe router with the lowest numerical lo0 IP address will be elected as the DIS.

DThe router with the lowest MAC address will be elected as the DIS.

Show Suggested Answer

Suggested Answer: A

A router's priority for becoming the designated router is indicated by an arbitrary number from 0 through 127, which you configure on the IS-IS interface. The router with the highest priority becomes the designated router for the area (Level 1, Level 2, or both), also configured on the IS-IS interface. If routers in the network have the same priority, then the router with the highest MAC address is elected as the designated router. By default, routers have a priority value of 64.

https://www.juniper.net/documentation/us/en/software/junos/is-is/topics/concept/routing-protocol-is-is-security-designated-router-understanding.html

by Katina at Mar 21, 2024, 11:37 AM

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