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A company's network engineer is designing an active-passive connection to AWS from two on-premises data centers. The company has set up AWS Direct Connect connections between the on-premises data centers and AWS. From each location, the company is using a transit VIF that connects to a Direct Connect gateway that is associated with a transit gateway.
The network engineer must ensure that traffic from AWS to the data centers is routed first to the primary data center. The traffic should be routed to the failover data center only in the case of an outage.
Which solution will meet these requirements?
Suggested Answer: C
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The correct solution is to use an S3 interface endpoint and an on-premises DNS resolver. An S3 interface endpoint allows you to access Amazon S3 using private IP addresses within your VPC. An on-premises DNS resolver can be configured to forward the DNS queries for the S3 domain names to the S3 interface endpoint, so that the on-premises workloads can access Amazon S3 privately over the VPN connection. This solution is operationally efficient, as it does not require any additional infrastructure or changes to the existing workloads. The VPC workloads can continue to use the S3 gateway endpoint, which provides lower latency and higher throughput than the S3 interface endpoint.
39 comments · newest first
AM
Amira
11 months ago
Not sure about the community tags, could be confusing for new users.
WI
Winifred
11 months ago
Totally agree with A, it aligns with best practices!
FL
Fletcher
11 months ago
Wait, why are we using 9300 and 9100 in C and D? That seems off.
CA
Caren
11 months ago
I think B is the better choice for failover routing.
TR
Troy
12 months ago
Option A seems correct with the community tags.
VI
Vincenza
12 months ago
I have a hunch that the primary data center should be tagged with something like 7224:7100, but I’m not confident about the failover tag.
KR
Kris
1 year ago
I think option A sounds familiar, but I can't recall if 7224:7100 is the correct tag for the primary data center.
AN
An
1 year ago
This question feels similar to the practice exam where we had to prioritize routes using BGP. I think the primary should have a lower community tag value, right?
LA
Laura
1 year ago
I remember we discussed BGP community tags in class, but I'm not entirely sure which values to assign for primary and failover.
DO
Dorian
1 year ago
I'm not totally sure about this one. The question is asking about routing traffic from AWS to the data centers, so I'm wondering if the BGP community values need to be set the other way around. I'll have to think this through carefully.
SH
Sherell
1 year ago
Okay, I've got it now. We want the primary data center to have the lower BGP community value so that its routes are preferred over the failover data center. Option A is the correct solution.
KA
Karol
1 year ago
I think the key here is understanding how to use BGP communities to control the routing preference. Option A seems like the right approach, setting the primary data center to a lower community value to make it the preferred route.
JA
Jaime
1 year ago
Hmm, I'm a bit confused on the BGP community values. Do we want the lower or higher value to be the preferred route? I'll need to double-check the details on how BGP communities work.
AJ
Aja
1 year ago
This seems like a straightforward question about recommending a standard report to track budget updates. I think I'll go with option D - a hierarchical report on budget updates, as that would provide a good overview of the changes.
TR
Trinidad
1 year ago
Ah, I've seen this type of question before. I'm pretty confident that A and D are the correct answers here. The change request type and organizational structure entry options seem like the most relevant features to implement the agent determination logic.
EV
Evan
1 year ago
Using electronic data interchange could help get information faster, but I'm not sure if that's the most appropriate action here. I'll have to weigh the pros and cons.
CL
Clarence
1 year ago
This looks like a straightforward tax basis calculation, but I want to make sure I understand the details before jumping in.SarahP: Okay, let me think this through step-by-step. Leker exchanged a van with a $20,000 basis for a new van worth $10,000 and $3,000 in cash. The key is figuring out the basis of the new van.EmilyR: I'm a little confused on how to handle the cash received. Is that considered part of the basis or does that get subtracted somehow?TomS: I think the answer is B - $17,000. The basis of the new van should be the $20,000 basis of the old van, minus the $3,000 cash received.JessicaL: Got it, that makes sense. The $3,000 cash is considered "boot" and reduces the basis of the new van. I'm feeling pretty confident about this one now.
PO
Portia
1 year ago
Ugh, why do they always have to make these network design questions so convoluted? I bet the answer is simpler than it looks.
RO
Rolf
1 year ago
B) Set the BGP community tag for all prefixes from the primary data center to 7224:7300. Set the BGP community tag for all prefixes from the failover data center to 7224:7100
JE
Jeff
1 year ago
I agree, sometimes they overcomplicate things.
JA
Jaime
1 year ago
A) Set the BGP community tag for all prefixes from the primary data center to 7224:7100. Set the BGP community tag for all prefixes from the failover data center to 7224:7300
DO
Dorothy
1 year ago
Hold on, is this a trick question? I better double-check those community tag values.
CA
Candra
1 year ago
A) Let's make sure we have the correct tags set up for each data center.
EM
Emerson
1 year ago
B) I think you're right. That option seems to meet the requirements.
AN
Anjelica
1 year ago
A) Set the BGP community tag for all prefixes from the primary data center to 7224:7100. Set the BGP community tag for all prefixes from the failover data center to 7224:7300
RA
Rachael
1 year ago
Wait, are we supposed to be setting the BGP community tags to 9100 and 9300? That seems a bit odd, but I'll give it a shot.
LA
Layla
1 year ago
Ah, I see! The primary data center prefixes need to be preferred over the failover data center prefixes. This should do the trick.
SA
Sarina
1 year ago
D: I agree with option A. It makes sense to prioritize the primary data center prefixes over the failover data center prefixes
LA
Lachelle
1 year ago
C: Actually, I think option A is correct. The primary data center should be tagged with 7224:7100 and the failover data center with 7224:7300
BR
Brice
1 year ago
B: No, I believe it should be the other way around. Set the BGP community tag for all prefixes from the primary data center to 7224:7300 and for the failover data center to 7224:7100
MI
Miles
1 year ago
A: I think the solution is to set the BGP community tag for all prefixes from the primary data center to 7224:9100 and for the failover data center to 7224:9300
AN
Annalee
2 years ago
Hmm, I see your point. Setting the BGP community tag for the primary data center to 7224:9100 does make sense for routing traffic first to the primary data center.
LU
Luisa
2 years ago
I disagree, I believe the correct answer is D) Set the BGP community tag for all prefixes from the primary data center to 7224:9100.
LU
Luis
2 years ago
Hmm, this looks tricky. I need to make sure I understand the routing requirements correctly.
FA
Fatima
1 year ago
D) Set the BGP community tag for all prefixes from the primary data center to 7224:7100. Set the BGP community tag for all prefixes from the failover data center to 7224:7300
MA
Maxima
1 year ago
C) Set the BGP community tag for all prefixes from the primary data center to 7224:7100. Set the BGP community tag for all prefixes from the failover data center to 7224:7300
BU
Bulah
1 year ago
B) Set the BGP community tag for all prefixes from the primary data center to 7224:7100. Set the BGP community tag for all prefixes from the failover data center to 7224:7300
VI
Vivan
1 year ago
A) Set the BGP community tag for all prefixes from the primary data center to 7224:7100. Set the BGP community tag for all prefixes from the failover data center to 7224:7300
AN
Annalee
2 years ago
I think the answer is A) Set the BGP community tag for all prefixes from the primary data center to 7224:7100.