According to the information given in the figure, which of the following descriptions of the IPv6 routing information calculated by the R router through ISIS is correct?

The correct answer is B. R4 has 2 equal-cost IS-IS default routes. See the full explanation below for the reasoning.

Advanced IP Routing and Multicast

Question

Exhibit

Options

AR4 has no IS-IS routing entry
BR4 has 2 equal-cost IS-IS default routes
CR4 has 2 non-equivalent IS-1S default routes
DR4 has 1 1S-IS default route

How the community answered

(36 responses)

A
6% (2)
B
72% (26)
C
14% (5)
D
8% (3)

Topics

#IS-IS#IPv6 routing#equal-cost routes#default route

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