How many write capacity units should you provision duri…

You need to migrate 10 million records in one hour into DynamoDB. All records are 1.5KB in size. The data is evenlydistributed across the partition key. How many write capacity units should you provision during this batch load? A. 6667 B. 4166 C. 5556 D. 2778 Explanation:You need 2 units to make a 1.5KB write, […]

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which stack state refuses UpdateStack calls?

For AWS CloudFormation, which stack state refuses UpdateStack calls? A. UPDATE_ROLLBACK_FAILED B. UPDATE_ROLLBACK_COMPLETE C. UPDATE_COMPLETE D. CREATE_COMPLETE Explanation:When a stack is in the UPDATE_ROLLBACK_FAILED state, you can continue rolling it back to return it to a working state(to UPDATE_ROLLBACK_COMPLETE). You cannot update a stack that is in the UPDATE_ROLLBACK_FAILED state.However, if you can continue to […]

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Why are more frequent snapshots or EBS Volumes faster?

Why are more frequent snapshots or EBS Volumes faster? A. Blocks in EBS Volumes are allocated lazily, since while logically separated from other EBS Volumes, Volumes often share the same physical hardware. Snapshotting the first time forces full block range allocation, so the second snapshot doesn’t need to perform the allocation phase and is faster. […]

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What is the most likely issue?

Your serverless architecture using AWS API Gateway, AWS Lambda, and AWS DynamoDB experienced a large increasein traffic to a sustained 400 requests per second, and dramatically increased in failure rates. Your requests, during normaloperation, last 500 milliseconds on average. Your DynamoDB table did not exceed 50% of provisioned throughput, and Table primary keys are designed […]

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What is the best way to accomplish this?

You need to grant a vendor access to your AWS account. They need to be able to read protected messages in a privateS3 bucket at their leisure. They also use AWS. What is the best way to accomplish this? A. Create an IAM User with API Access Keys. Grant the User permissions to access the […]

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What’s the easy way for you to see that notification?

You need to know when you spend $1000 or more on AWS. What’s the easy way for you to see that notification? A. AWS CloudWatch Events tied to API calls, when certain thresholds are exceeded, publish to SNS. B. Scrape the billing page periodically and pump into Kinesis. C. AWS CloudWatch Metrics + Billing Alarm […]

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What can you do to reduce this load?

You are getting a lot of empty receive requests when using Amazon SQS. This is making a lot of unnecessary networkload on your instances. What can you do to reduce this load? A. Subscribe your queue to an SNS topic instead. B. Use as long of a poll as possible, instead of short polls. C. […]

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How might you do this?

You need to process long-running jobs once and only once. How might you do this? A. Use an SNS queue and set the visibility timeout to long enough for jobs to process. B. Use an SQS queue and set the reprocessing timeout to long enough for jobs to process. C. Use an SQS queue and […]

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what are true of Global Secondary Key properties?

When thinking of DynamoDB, what are true of Global Secondary Key properties? A. The partition key and sort key can be different from the table. B. Only the partition key can be different from the table. C. Either the partition key or the sort key can be different from the table, but not both. D. […]

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You need to do this as cheaply as possible

You need your CI to build AMIs with code pre-installed on the images on every new code push. You need to do this ascheaply as possible. How do you do this? A. Bid on spot instances just above the asking price as soon as new commits come in, perform all instance configuration and setup, then […]

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