[AUDIO LOGO]
Congratulations on completing another skill.
Now it's time for a review in the form of a quiz.
Let's jump in with our first question.
What LSA type is used to send a default route into an NSSA area
if you use the default-information-originate
option?
So two key factors here--
first, we are talking about an NSSA,
and we are using the default-information-originate
option.
So given those two things, we should
be able to eliminate right off the bat,
it's certainly not going to be a type 1.
And it's not going to be a type 5,
because remember type 5's are not allowed in an NSSA.
So that would leave a 3 or a 7.
Now, the type 3 is sent in if we do a total NSSA.
But this is not talking about a total NSSA,
it's talking specifically about the
default-information-originate.
Therefore, it would not be a type 3.
It is sent in as a type 7.
So number four, type 7, is our correct answer.
Next question, which of the following OSPF area
types inject a default route into the area automatically?
So the important factor here, of course,
is the word automatically.
All of these can actually send in a default route.
It's just a question of which ones do it automatically.
Normal areas do not send in default routes automatically.
So that one's out.
Stub areas do automatically generate a default.
So 2 would be correct.
The normal NSSA, or the standard NSSA,
actually does not automatically inject a default. Again,
this allows us to follow an external if we want to.
A total NSSA, however, does send in a default automatically,
as does a total stub.
Therefore, our correct answers here are 2, 4, and 5.
Final question, what is the difference between a stub
area and an NSSA?
So this being a fill in the blank question,
there's several ways, of course, you could answer this.
But the general idea is that a stub area does not
allow external routes in the area
at all, where an NSSA actually allows externals
but only if they're injected into the NSSA.
And they'll come in as a type 7 LSA.
This, of course, is going to get translated into a type 5 LSA.
But that doesn't mean that we allow
type 5 LSAs from other areas.
Those are still not allowed, because this is a stub.
That concludes this quiz.
If you find that you were missing any of the information
to answer these questions correctly,
I would encourage you to go back and review the reference
sources on each question.
Otherwise, congratulations on completing OSPF Area Types.
I hope this has been informative for you,
and I'd like to thank you for viewing.