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Amazon DVA-C02 Exam - Topic 1 Question 1 Discussion

An ecommerce company is using an AWS Lambda function behind Amazon API Gateway as its application tier. To process orders during checkout, the application calls a POST API from the frontend. The POST API invokes the Lambda function asynchronously. In rare situations, the application has not processed orders. The Lambda application logs show no errors or failures.What should a developer do to solve this problem?
B) Create and inspect the Lambda dead-letter queue. Troubleshoot the failed functions. Reprocess the events.
A) Inspect the frontend logs for API failures. Call the POST API manually by using the requests from the log file.
C) Inspect the Lambda logs in Amazon CloudWatch for possible errors. Fix the errors.
D) Make sure that caching is disabled for the POST API in API Gateway.

Amazon DVA-C02 Exam - Topic 1 Question 1 Discussion

Actual exam question for Amazon's DVA-C02 exam
Question #: 1
Topic #: 1
[All DVA-C02 Questions]

An ecommerce company is using an AWS Lambda function behind Amazon API Gateway as its application tier. To process orders during checkout, the application calls a POST API from the frontend. The POST API invokes the Lambda function asynchronously. In rare situations, the application has not processed orders. The Lambda application logs show no errors or failures.

What should a developer do to solve this problem?

Show Suggested Answer Hide Answer
Suggested Answer: B

by Luisa at Mar 23, 2023, 04:51 AM

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Estrella
10 months ago
Definitely check CloudWatch logs, you might find something there.
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Dolores
10 months ago
Wait, why would caching affect the POST API? That sounds odd.
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Elly
10 months ago
Not sure about that, wouldn’t inspecting the frontend logs help too?
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Teresita
11 months ago
Agree, B seems like the best option here.
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Gladis
11 months ago
I think checking the Lambda dead-letter queue is a good start.
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Kayleigh
11 months ago
I’m a bit confused about caching in API Gateway. I don’t recall it being a common issue for POST requests, so I’m not sure if option D is relevant here.
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Joye
11 months ago
I feel like we practiced a question similar to this where inspecting CloudWatch logs was key. Maybe option C is the right approach?
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Iesha
11 months ago
I think option B sounds familiar. Dead-letter queues can help with troubleshooting, but I’m not entirely sure how to set it up properly.
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Lilli
11 months ago
I remember we discussed the importance of checking logs, but I'm not sure if inspecting the frontend logs would help in this case since the Lambda logs show no errors.
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Michell
11 months ago
I vaguely recall something about caching in API Gateway. Disabling it could be relevant, but I'm not convinced it would solve the order processing issue directly.
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Corazon
11 months ago
I feel like we practiced a similar question where we had to check CloudWatch logs. It seems logical to look there for any hidden errors in the Lambda function.
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Frederica
11 months ago
I'm not entirely sure, but I think inspecting the frontend logs could be useful. If there were any API failures, that might explain why orders aren't processing.
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Mireya
11 months ago
I remember we discussed the importance of checking the dead-letter queue for Lambda functions. It might help identify if there were any unprocessed events.
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Britt
11 months ago
Hmm, this seems like a tricky one. I'll need to think carefully about the role of internal auditors and how that might impact the independent auditor's procedures.
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Scarlet
11 months ago
This question is testing our understanding of zone management and shared storage. I'll need to think through the implications of each option carefully.
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Kenneth
11 months ago
Hmm, I'm not sure about this one. I'll need to review my notes on the rsync command and make sure I understand the syntax correctly before selecting an answer.
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