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A company has a global network and is using transit gateways to connect AWS Regions together. The company finds that two Amazon EC2 instances in different Regions are unable to communicate with each other. A network engineer needs to troubleshoot this connectivity issue.
What should the network engineer do to meet this requirement?
Suggested Answer: B, D
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34 comments · newest first
KA
Katina
11 months ago
B is okay, but I prefer A for thoroughness.
LI
Lilli
11 months ago
Surprised no one mentioned Firewall Manager, it's super useful!
LI
Lisbeth
11 months ago
D seems off, VPC Reachability Analyzer isn't the right tool here.
AU
Audria
12 months ago
I think C makes more sense, flow logs are crucial.
DA
Daren
12 months ago
A is the best choice, covers all bases!
LE
Lennie
1 year ago
I’m leaning towards option D because it mentions VPC Reachability Analyzer, which I think is specifically designed for this kind of issue, but I need to double-check how it compares to the other options.
KI
Kip
1 year ago
I feel like option C is the right choice since it mentions both the Route Analyzer and VPC flow logs, but I’m a bit confused about the role of Firewall Manager in this context.
NO
Nobuko
1 year ago
I practiced a similar question where we had to troubleshoot EC2 connectivity, and I remember VPC flow logs being really useful for analyzing traffic.
VI
Vicki
1 year ago
I think using AWS Network Manager Route Analyzer is definitely a good start, but I'm not sure if I remember the exact steps to verify the VPC route tables.
GE
Geraldo
1 year ago
Hmm, I'm a bit unsure about this one. There are a few different options listed, and I'm not totally sure which ones apply based on the information given. I'll have to read through it carefully and think it through.
MA
Marquetta
1 year ago
This looks like a classic fraud scenario. I'm pretty sure they're describing a fake sale - the employee and accomplice are working together to steal merchandise.
MY
Myra
1 year ago
Okay, let me think this through. The console is used to manage system settings, so that's likely one of the true statements. I'm not sure about the other options, though.
JI
Jin
1 year ago
I've worked with Windows event logs before, so I think I've got a good handle on this. I'll eliminate the options that don't seem to match the description and go with the one that best fits.
PA
Paulina
1 year ago
Hmm, Option D looks tempting, but why use VPC Reachability Analyzer when we have the tried and true VPC flow logs? Option C is the way to go, no doubt about it.
BR
Brigette
1 year ago
Agreed, let's go with Option C and use VPC flow logs to troubleshoot the connectivity issue.
PA
Paris
1 year ago
True, VPC flow logs are tried and true. We should go with Option C for a more accurate analysis.
KA
Kaitlyn
1 year ago
But VPC flow logs are more reliable for analyzing IP traffic, so Option C seems like the safer choice.
LE
Leonora
1 year ago
I think Option D is better because VPC Reachability Analyzer can provide more detailed information.
LU
Lucina
1 year ago
Haha, I bet the network engineer is scratching their head right now, trying to figure out why these EC2 instances can't talk to each other. Gotta love those transit gateway problems!
MA
Matthew
1 year ago
I agree, Option C seems to be the most comprehensive solution. Checking the routing tables and using VPC flow logs to identify any security or network ACL rules that might be blocking the communication is crucial.
AN
Antonio
1 year ago
Yes, using AWS Network Manager Route Analyzer and VPC flow logs will help pinpoint where the communication breakdown is happening.
AR
Arminda
1 year ago
I agree, analyzing the routes in the transit gateway and VPC route tables, as well as checking security group rules with VPC flow logs, is essential.
HA
Han
1 year ago
I think Option C is the best choice. It covers all the necessary steps to troubleshoot the connectivity issue.
KE
Kenneth
2 years ago
I think option A is the best choice because it covers all the necessary steps to troubleshoot the connectivity issue between the EC2 instances in different Regions.
GO
Golda
2 years ago
I agree with Jacinta. It's important to also use VPC flow logs to analyze the IP traffic that security group rules and network ACL rules accept or reject in the VPC.
FL
Florinda
2 years ago
Option C is the correct answer. Analyzing the transit gateway route tables and VPC route tables, along with using VPC flow logs, is the best approach to troubleshoot the connectivity issue.
EL
Elenor
1 year ago
Great, so option C is the best approach to troubleshoot the connectivity issue.
AD
Adelle
1 year ago
Don't forget to use VPC flow logs to analyze the IP traffic that security group rules and network ACL rules accept or reject in the VPC.
DE
Desirae
1 year ago
Yes, that sounds like a good idea. We also need to verify that the VPC route tables are correct.
SH
Shaniqua
1 year ago
I think we should use AWS Network Manager Route Analyzer to analyze routes in the transit gateway route tables and VPC route tables.
JA
Jacinta
2 years ago
I think the network engineer should use AWS Network Manager Route Analyzer to analyze routes in the transit gateway route tables and in the VPC route tables.
MI
Mila
2 years ago
I think option A is the best choice. It covers all the necessary steps to troubleshoot the connectivity issue between the EC2 instances in different Regions.
CA
Carmelina
2 years ago
I agree with Carmen. It's important to also use VPC flow logs to analyze the IP traffic that security group rules and network ACL rules accept or reject in the VPC.
CA
Carmen
2 years ago
I think the network engineer should use AWS Network Manager Route Analyzer to analyze routes in the transit gateway route tables and in the VPC route tables.