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Amazon DVA-C02 Exam - Topic 6 Question 18 Discussion

A developer is building a serverless application by using AWS Serverless Application Model (AWS SAM) on multiple AWS Lambda functions.When the application is deployed, the developer wants to shift 10% of the traffic to the new deployment of the application for the first 10 minutes after deployment. If there are no issues, all traffic must switch over to the new version.Which change to the AWS SAM template will meet these requirements?
A) Set the Deployment Preference Type to Canary10Percent10Minutes. Set the AutoPublishAlias property to the Lambda alias.
B) Set the Deployment Preference Type to LinearlOPercentEvery10Minutes. Set AutoPubIishAIias property to the Lambda alias.
C) Set the Deployment Preference Type to CanaryIOPercentIOMinutes. Set the PreTraffic and PostTraffic properties to the Lambda alias.
D) Set the Deployment Preference Type to LinearlOPercentEveryIOMinutes. Set PreTraffic and Post Traffic properties to the Lambda alias.

Amazon DVA-C02 Exam - Topic 6 Question 18 Discussion

Actual exam question for Amazon's DVA-C02 exam
Question #: 18
Topic #: 6
[All DVA-C02 Questions]

A developer is building a serverless application by using AWS Serverless Application Model (AWS SAM) on multiple AWS Lambda functions.

When the application is deployed, the developer wants to shift 10% of the traffic to the new deployment of the application for the first 10 minutes after deployment. If there are no issues, all traffic must switch over to the new version.

Which change to the AWS SAM template will meet these requirements?

Show Suggested Answer Hide Answer
Suggested Answer: A

The AWS Serverless Application Model (AWS SAM) comes built-in with CodeDeploy to provide gradual AWS Lambda deployments1. TheDeploymentPreferenceproperty in AWS SAM allows you to specify the type of deployment that you want. TheCanary10Percent10Minutesoption means that 10 percent of your customer traffic is immediately shifted to your new version.After 10 minutes, all traffic is shifted to the new version1.TheAutoPublishAliasproperty in AWS SAM allows AWS SAM to automatically create an alias that points to the updated version of the Lambda function1. Therefore, option A is correct.


by Corinne at Dec 22, 2023, 05:26 AM

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Nada
9 months ago
I’m confused about the difference between A and C.
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Arlen
9 months ago
A definitely sounds correct. 10% for 10 minutes is perfect!
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Graciela
10 months ago
Wait, can you really shift traffic like that? Sounds risky!
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German
10 months ago
I think B is better for gradual rollouts, though.
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Danilo
10 months ago
Option A is the right choice for canary deployments!
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Glen
10 months ago
I feel like option A is correct since it specifies 10% traffic for 10 minutes, which matches the requirements exactly.
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Augustine
11 months ago
I recall that the PreTraffic and PostTraffic properties are important, but I can't remember if they were used in option C or D.
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Claudia
11 months ago
I'm not entirely sure, but I remember something about linear deployments being used for gradual traffic shifts. Could it be B?
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Fidelia
11 months ago
I think the answer might be A because it mentions Canary deployment, which is what we practiced in class for shifting traffic.
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Aracelis
11 months ago
I've got a strategy for this. I'll carefully read through each option and think about how the deployment preference types and other properties match the requirements in the question. That should help me identify the correct answer.
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Shantay
11 months ago
I'm a bit confused by the different deployment preference types mentioned in the options. I'll need to review the AWS SAM documentation to make sure I understand the differences between them and how they work. This seems like an important concept to get right.
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Paz
11 months ago
Okay, let's see. The key requirements are to shift 10% of traffic to the new deployment for the first 10 minutes, and then switch all traffic to the new version. I think the Canary deployment type might be the way to go, but I'll need to double-check the details.
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Iluminada
11 months ago
Hmm, I'm a bit unsure about this one. The question is asking about specific deployment preference types, and I'm not too familiar with the details of those. I'll need to think this through carefully.
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Jerilyn
11 months ago
This looks like a straightforward question about AWS SAM deployment preferences. I think I've seen something like this before, so I should be able to handle it.
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Yasuko
11 months ago
I'm a little confused by this question. I know workers' comp and group health plans are different, but I'm not sure I fully understand how that translates to the provider network characteristics. I'll have to review my notes and see if I can figure out the best approach.
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Carey
11 months ago
I'm pretty confident about this one. The solution clearly states that you federate the 'Office 365 domain' with Okta, not the 'Office 365 tenant name'. Option A is the correct answer.
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Kirk
2 years ago
I think we can safely rule out C and D. Let's go with A - Canary10Percent10Minutes. Sounds like the best fit for the given requirement.
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Maybelle
2 years ago
Great choice! Now we just need to deploy and test the new version of the application.
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Jaime
2 years ago
Canary10Percent10Minutes will allow us to safely shift 10% of the traffic initially.
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Rima
2 years ago
I think we have made the right decision by choosing option A.
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Vivan
2 years ago
Setting the AutoPublishAlias property to the Lambda alias will ensure all traffic switches over if there are no issues.
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Art
2 years ago
Let's go ahead with setting the Deployment Preference Type to Canary10Percent10Minutes.
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Garry
2 years ago
It makes sense to use Canary10Percent10Minutes for this scenario.
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Keshia
2 years ago
I agree, A seems like the most appropriate choice for the traffic shifting method.
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Felicitas
2 years ago
Agreed, A is the way to go. Now let's just hope the actual exam question is as straightforward as this one!
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Reuben
2 years ago
Exactly, the question is specifically asking about the traffic shifting mechanism, not the pre/post-deployment checks. So C and D are not the right answers.
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