Welcome back, and in this lesson,
I want to take a sample question
which you might find in the exam and break it down,
helping you to understand the process I go through
when answering exam questions.
Now this question is taken from the tutorials dojo.com,
advanced networking specialty practice exam.
It's taken with their permission.
So let's get started
and step through this question straight away.
Now let's start by reading the question.
So the question is, a network administrator,
is instructed to support
high throughput processing workloads
between the companies on-premises storage gateway appliance
and AWS storage gateway.
She must establish a dedicated network connection
to reduce the company's network costs
and increase bandwidth throughput
and provide a more consistent network experience
than internet based connections.
What are the steps that the administrators should do
to properly implement this integration?
And you're given the directive to select three answers.
Now go ahead and pause the video
and look for any keywords
that you can find in this question.
This time, aim to find what's really important.
Once you've done, resume the video
and we can compare what you identified to the keywords
which I found.
Okay, let's go ahead and compare what I found
to what you found.
Now this question is a really interesting one.
You'll see why when we break down the answers.
What I spotted, is that the question
is talking about a workload
between the on-premise storage gateway appliance
and AWS storage gateway.
So you need to understand this product
well enough to answer this question.
It also states that it wants a dedicated network connection,
which can increase bandwidth
and offer a consistent experience,
at least one which is more consistent and higher bandwidth
than internet based connections.
And you also have to pick three answers.
Now, if you say dedicated bandwidth and consistency
in any exam questions,
this generally screams direct connect.
So keep that one in mind before we look at the answers,
think about how to use storage gateway
and direct connect together.
You need to keep freshening your memory,
the facts and architectures that you know of
as they relate to storage gateway and direct connect.
Now let's talk through the available answers.
The first option that we have,
is connect the on-premises storage gateway appliance
to the AWS direct connect router.
The next answer is to set up a private virtual interface
and configure your on-premise router accordingly.
The third option
is to establish an AWS managed VPN connection
between the on-premises data center
and the storage gateway private endpoint.
The fourth answer,
create and establish an AWS direct connection
between the on-premises data center
and the storage gateway public endpoint.
The next, connect the on-premise storage gateway appliance
to the VPC via a virtual public gateway.
And the next answer, create a public virtual interface
and configure your on-premises router accordingly.
So these are the answers that we have available.
Why don't you go ahead and try to identify
any key words which you can see in the answers.
Just pause the video and resume it
once you're good to carry on.
Okay, so let's compare what you found in the answers
to what I found.
What I highlighted, is what I found really important
in the answers.
I'm looking for things related to the storage gateway
or direct connect products,
because that's what I spotted in the question.
So I see direct connect router on the first line,
private virtual interface on the second,
VPN connection and private endpoint on the third,
direct connect and public endpoint on the fourth,
VPC and virtual public gateway on the fifth,
and then finally, public virtual interface on the sixth.
Now focus for a second on the structure of these answers.
There are two solutions being presented,
VPN and direct connect.
And then for direct connect, you have different solutions,
public and private virtual interfaces.
Now this is why topic knowledge is essential.
Just to start with,
you should know, by now that storage gateway
uses a public service endpoint,
it connects to something in the AWS public space network.
We've no other knowledge,
anything which talks about private connectivity,
can be excluded.
So with answer B,
regardless of whether you're selecting VPN
or direct connect, storage gateway,
doesn't use private networking or private endpoints.
And the same is true with answer C.
Regardless of picking direct connect or VPN,
private endpoints aren't used for storage gateway.
So out of the six answers,
we've already self eliminated two of them.
And the question also strongly hints at a requirement
for direct connect.
Increased bandwidth more consistency,
both of those scream to select direct connect as an answer.
So in this case, answer E is wrong for this reason
and also because it suggests connectivity to a VPC
using a virtual public gateway.
Now, this is a trick answer
because there's no such thing as a virtual public gateway.
VPNs use a virtual private gateway,
so this is designed to make you think
that that's what it's talking about.
It uses the word public,
in case you're aware that the storage gateway
uses a public space endpoint.
It hopes that you might pick this one
instead of the other correct answers,
but in any case, this is incorrect.
Now this only leaves us with three answers remaining,
and we're only being asked to pick three.
This is why elimination is often so important
because you can often answer questions
just by using elimination
even if you aren't sure of the correct answer.
In this case,
you would connect the storage gateway appliance
to the direct connect router, which is answer A,
then create a public VEGF to allow connectivity
to the public space storage gateway endpoints,
which is answer E,
and then finally D which is to create a connection
between the on-premise data center
and the storage gateway public endpoints.
And that's it.
It started looking
as though this might be a challenging question,
but it's possible to answer
just by eliminating the bad answers.
What it does highlight is that you do need
good product knowledge going into the exam,
both how a product is architected such as storage gateway,
and also the features that our product offers
such as the high bandwidth and consistent performance
offered by direct connect.
Now hope this breakdown helped.
And once again,
this is a tutorials dojo.com question.
It's used with their permission
and you should check them out,
and a link is attached to this lesson
if you feel that you want extra exam practice
over and above what's included in this course.
Now, thanks for watching, go ahead and complete this video.
And when you're ready,
I look forward to you joining me in the next.