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[Kumar Mahadevan]

Timed Mode Set 4 – AWS Certified Solutions Architect Professional

Q26:

A media company recently launched a web service that allows users to upload and share short videos. Currently, the web servers are hosted on an Auto Scaling group of Amazon EC2 instances in which the videos are processed and stored in the EBS volumes. Each uploaded video sends a message on the Amazon SQS queue, which is also processed by an Auto Scaling group of Amazon EC2 instances. The company relies on third-party software to analyze and categorize the videos. The website also contains static content that has variable user traffic. The company wants to re-architecture the application to reduce costs, reduce dependency on third-party software, and reduce management overhead by leveraging AWS-managed services.

Which of the following solutions will meet the company’s requirements?

Correct answer is mentioned as option 2 “Create ECS Fargate cluster & use Spot instances to process SQS queue”.

The scenario does not provide sufficient information to justify using spot instances & it cannot be a correct option just to satisfy cost reduction requirements. Pls update the scenario to provide more context for selecting Spot instances.

[JR-TutorialsDojo]

Hi Kumar Mahadevan,

Thank you for sharing your thoughts on this item. Take note that there are questions in the actual AWS exam that are difficult, tricky, and ambiguous. You have to be prepared to look for specific keywords or key phrases in order to find the most suitable answer. This is the style that we are trying to mimic in our practice tests. Some of the questions do not explicitly show the obvious keywords or phrases that will easily point to the answer.

Let us know if you need further assistance. The Tutorials Dojo team is dedicated to help you pass your AWS exam on your first try!

Regards,
JR @ Tutorials Dojo

[Kumar Mahadevan]

On what basis do I select spot instances here? Help me understand. What key words do I look for here?

[JR-TutorialsDojo]

Hello Kumar Mahadevan,

Thanks for the reply.

Here are the key aspects to consider:

Cost Savings:

Spot Instances allow you to bid for unused EC2 capacity at a reduced cost compared to On-Demand pricing.

Given that the company wants to reduce costs, leveraging Spot Instances can be a strategic choice.

Keywords to Look For:

Reduce Costs: Indicates that cost-saving measures like Spot Instances should be considered.

Auto Scaling: Spot Instances can be integrated with Auto Scaling groups, making it a good fit for dynamically scaling workloads.

Non-Critical, Interruptible Workloads: Spot Instances are ideal for workloads that can tolerate interruptions, such as batch processing or background tasks. Since videos are uploaded, placed in an Amazon SQS queue, and then processed, there’s no immediate requirement for real-time processing.

Even if a Spot Instance is interrupted, another instance from the queue can retry the processing task.

Use Case Context:

Processing SQS Queue: Since SQS processing tasks are not critical and can tolerate interruptions, Spot Instances are a suitable choice. Even if a Spot Instance is terminated, another instance can reprocess the message.

https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/step-receive-delete-message.html

As mentioned in the explanation, the videos are processed and stored in the EBS volumes, suggesting that the service is dynamic in nature. Amazon S3’s static website hosting does not provide server-side processing, which is necessary for dynamic websites.

By identifying these keywords and understanding the requirements, you can determine the suitability of Spot Instances in the provided scenario.

I hope this helps! If you have any more questions or need further assistance, feel free to ask.

Best regards,
JR @ Tutorials Dojo

[Kumar Mahadevan]

Help me on how much time do I spend on each Q? Most of the scenarios are quite lengthy and contain a lot of information. Is it advisable to flag off Qs that are big & attempt the easier ones first?

[JR-TutorialsDojo]

Hello Kumar Mahadevan,

Try using the timed mode and focus on completing the quiz within the set time limit. This approach will help you manage your time effectively and ensure you can answer all the questions.