[AUDIO LOGO]
Congratulations on completing another skill.
Now it's time for a review in the form of a quiz.
So let's go ahead and jump in with our first question.
Which command will display the IS-IS IPv4 prefix attributes?
So let's go down our list.
Show isis neighbor?
Well, it will show you what it sounds like,
which is neighbors.
But the neighbors, of course, do not
include the prefix attributes.
Now, show isis rib, which, of course, is focusing
on the routing information base, this one
does, in fact, tell you the prefix attributes,
because it's giving you detailed information on the prefixes.
Now, show isis database would sound like a tempting answer.
However, although there may be a detailed command on that that
may show you the attributes, show isis
database itself does not.
So this is actually going to be an incorrect answer.
And show ip route isis shows you routing table information.
And even if we were to ask for details on the prefix,
it's still just giving us routing information.
And the IS-IS prefix attributes are not
part of routing information.
So that would actually make answer four an incorrect answer
as well.
Therefore, the correct answer to see the IPv4 prefix attributes
is answer two, show isis rib.
Next question, what is the default router type in IS-IS?
This answer is pretty much just a matter of memorization.
There's not really a point in going down the list here.
Hopefully, we remember that when we did not
set the IS type on the router, it did, in fact,
default to level 1-2.
Therefore, three is our correct answer.
And of course, just for clarity, there is no level 3.
That's just not even a valid answer.
One and two are not correct.
But four is not even valid.
So of course, that means three, level 1-2,
is our correct answer.
Final question, what configuration
will provide redundancy for the backbone through an area?
Now, this being fill in the blank,
there's several ways you could answer this.
The answer I chose to put here is
to configure the links between those L1,
L2 routers, which are generally the area border routers,
configure them as L1, L2 links.
So don't just have L1 links between the edge
routers in an IS-IS area.
So that concludes this quiz.
If you find you were missing any of the information needed
to answer these questions, I would
encourage you to go back and review the sources referenced
on each question to fill in those gaps in your knowledge.
Otherwise, congratulations on completing Implementing IS-IS.
I hope this has been informative for you,
and I want to thank you for viewing.