Which two statements are true about DIS elections in IS-IS? (Choose two.)

The correct answer is B. If a priority tie occurs, the router with the higher subnetwork point of attachment (SNPA) value D. The router with the higher priority value becomes the DIS. In IS-IS, deterministic DIS election makes the possibility of predicting the router that will be elected as DIS from the same set of routers. The router advertising the numerically highest priority wins, with numerically highest MAC address, also called a Subnetwork Point of…

IS-IS

Question

Options

AIf a priority tie occurs, the router with the lower subnetwork point of attachment (SNPA) value
BIf a priority tie occurs, the router with the higher subnetwork point of attachment (SNPA) value
CThe router with the lower priority value becomes the DIS.
DThe router with the higher priority value becomes the DIS.

How the community answered

(24 responses)

A
8% (2)
B
71% (17)
C
21% (5)

Explanation

In IS-IS, deterministic DIS election makes the possibility of predicting the router that will be elected as DIS from the same set of routers. The router advertising the numerically highest priority wins, with numerically highest MAC address, also called a Subnetwork Point of Attachment (SNPA), breaking the tie. https://kb.juniper.net/kb/documents/public/junos/StudyGuides/Ch4_from_JNCIP_studyguide.pdf

Topics

#IS-IS DIS election#SNPA#DIS priority#IS-IS LAN

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