Amazon Exam ANS-C01 Topic 2 Question 18 Discussion

Actual exam question for Amazon's ANS-C01 exam

Question #: 18
Topic #: 2

An organization is using a VPC endpoint for Amazon S3. When the security group rules for a set of instances were initially configured, access was restricted to allow traffic only to the IP addresses of the Amazon S3 API endpoints in the region from the published JSON file. The application was working properly, but now is logging a growing number of timeouts when connecting with Amazon S3. No internet gateway is configured for the VPC.

Which solution will fix the connectivity failures with the LEAST amount of effort?

ACreate a Lambda function to update the security group based on AmazonIPSpaceChanged notifications.

BUpdate the VPC routing to direct Amazon S3 prefix-list traffic to the VPC endpoint using the route table APIs.

CUpdate the application server's outbound security group to use the prefix-list for Amazon S3 in the same region.

DCreate an additional VPC endpoint for Amazon S3 in the same route table to scale the concurrent connections to Amazon.

Show Suggested Answer

Suggested Answer: B

by Herminia at Dec 23, 2023, 06:58 PM

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Lorita

3 days ago

I'd be careful with that Lambda function idea. Seems like adding another moving part might just complicate things further. C looks like the way to go here.

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Teddy

8 days ago

Hmm, I see what they're getting at. Updating the routing table might be a bit overkill. I'm leaning towards C as well, seems the most straightforward solution.

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Justine

11 days ago

I'm not sure, but creating a Lambda function to update the security group also sounds like a good solution.

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Rocco

13 days ago

I agree with Carri, that option seems like it would require the least amount of effort.

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Carri

13 days ago

I think the best solution is to update the VPC routing to direct Amazon S3 traffic to the VPC endpoint.

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Kimbery

19 days ago

Ah, the good old AWS VPC endpoint debacle. Classic networking challenge right here. I'm going with option C - updating the security group seems like the quickest fix to me.

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