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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 LSA type is used to send a
default route into an NSSA area

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if you use the
default-information-originate

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option?

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So two key factors here--

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first, we are talking
about an NSSA,

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and we are using the
default-information-originate

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option.

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So given those two
things, we should

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be able to eliminate
right off the bat,

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it's certainly not
going to be a type 1.

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And it's not going
to be a type 5,

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because remember type 5's
are not allowed in an NSSA.

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So that would leave a 3 or a 7.

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Now, the type 3 is sent
in if we do a total NSSA.

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But this is not talking
about a total NSSA,

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it's talking
specifically about the

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default-information-originate.

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Therefore, it would
not be a type 3.

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It is sent in as a type 7.

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So number four, type 7,
is our correct answer.

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Next question, which of
the following OSPF area

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types inject a default route
into the area automatically?

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So the important
factor here, of course,

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is the word automatically.

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All of these can actually
send in a default route.

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It's just a question of which
ones do it automatically.

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Normal areas do not send in
default routes automatically.

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So that one's out.

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Stub areas do automatically
generate a default.

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So 2 would be correct.

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The normal NSSA, or
the standard NSSA,

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actually does not automatically
inject a default. Again,

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this allows us to follow
an external if we want to.

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A total NSSA, however, does
send in a default automatically,

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as does a total stub.

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Therefore, our correct
answers here are 2, 4, and 5.

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Final question, what is the
difference between a stub

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area and an NSSA?

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So this being a fill
in the blank question,

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there's several ways, of
course, you could answer this.

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But the general idea is
that a stub area does not

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allow external
routes in the area

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at all, where an NSSA
actually allows externals

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but only if they're
injected into the NSSA.

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And they'll come
in as a type 7 LSA.

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This, of course, is going to get
translated into a type 5 LSA.

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But that doesn't
mean that we allow

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type 5 LSAs from other areas.

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Those are still not allowed,
because this is a stub.

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That concludes this quiz.

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If you find that you were
missing any of the information

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to answer these
questions correctly,

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I would encourage you to go
back and review the reference

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sources on each question.

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Otherwise, congratulations on
completing OSPF Area Types.

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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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