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[AUDIO LOGO]

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Congratulations on
completing another skill.

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Now it's time for a review
in the form of a quiz.

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Let's jump in with
our first question.

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What is the purpose
of the type 8 LSA?

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Now, this being an
open-ended question,

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there would be a
couple of ways you

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can word this, but the way I
worded it is that they're used

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for the routers to
exchange information

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about the links
that are directly

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connected to neighbors,
and this includes

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the link-local address.

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Remember that these
are locally significant

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and therefore,
they'll actually be

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different on each
router in the OSPF area.

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Next question, what is the
purpose of the type 9 LSA?

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Again, this is
open-ended, but we're

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going to say that it's
used for the routers

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to exchange the prefixes that
are available on each router

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ID.

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We use these type 9s in
conjunction with the topology

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that we learned from the
type 1 and type 2 LSAs,

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and use that to
complete the topology,

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and therefore, populate
our routing tables.

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Next question, which multicast
groups are used by OSPFv3?

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So we can see by looking at
each of these answers, all

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of them are FF02, which are
the link local multicast.

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So this is really just going
to be about the last digit.

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And if you remember,
OSPF version 2

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and the IPv6 addresses,
they end in 5 and 6.

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Therefore, the
correct answers here

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are going to be 2
and 4 with those

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being the multicast addresses
used by OSPF version 3.

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Final question, what method is
used for OSPFv3 authentication?

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So this one is simply
a matter of remembering

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that OSPFv3 actually uses
IPsec for its authentication.

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Most of these other
answers are simply made up.

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SHA254 isn't even a
thing, it's SHA256.

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So again, the rest of these
are pretty much made up.

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Our answer is number 3.

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So that concludes this quiz.

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If you find you were missing
any of the information needed

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to answer these
questions, I would

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encourage you to review
the videos referenced

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in the sources on each question.

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Otherwise, congratulations
on Completing OSPF version 3.

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I hope this has been
informative for you,

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and I'd like to thank
you for viewing.

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