[AUDIO LOGO]
Congratulations on completing another skill.
Now, it's time for a review in the form of a quiz.
As we go through these questions,
be sure to pause the video after each question to give yourself
the opportunity to answer the question yourself
before we then go over the answer.
That said, let's jump in with our first question.
What of the two primary operational modes of PIM?
So this one is just a matter of memorization.
Fast mode, push mode, quick mode, pull mode,
these are all just made up terms.
The correct answers are sparse mode and dense mode.
Making three and five our correct answers
for this question.
Next question, which group range is used
for network control protocols?
So remember that these are also referred
to as link local addresses.
And the important thing to remember,
since all of these have the same, address 224.10.0.0.0,
the important thing to remember is going to be the subnet mask
here.
And it's not a /32 because that would basically be a host
address.
And that only give us one address.
Neither is it an 8 or a 16.
That means our correct answer is the /24.
Making three our correct answer for the link local or network
control protocol multicast group.
Final question, which of the following
is the most widely implemented multicast routing protocol?
So of course, the key here is the most widely implemented.
These are all multicast routing protocols.
So let's just go down our list.
First, we have PIM, which would be correct.
Except, it's PIM dense mode.
And it is part of PIM.
However, dense mode is not the most widely implemented.
Next is DVMRP.
This is the one that's based on RIP.
And again, not very popular at all.
Next is PIM sparse mode.
Sounds like a good answer, but let's look
at the rest of these.
Number four is multicast OSPF or MOSPF.
Again, not even supported on most platforms.
And finally is CBT or core-based tree.
A predecessor to PIM but not widely implemented.
That would make three, PIM sparse mode,
our correct answer.
And that concludes this quiz.
If you feel you are missing any of the information needed
to answer these questions, I would
encourage you to go back and review the sources listed
on each question.
Otherwise, congratulations on completing discovering IP
multicast.
I hope this has been informative for you.
And I'd like to thank you for viewing.