You are the new IT architect in a company that operates a mobile sleep tracking application.
When activated at night, the mobile app is sending collected data points of 1 kilobyte every 5 minutes to your backend.
The backend takes care of authenticating the user and writing the data points into an Amazon DynamoDB table.
Every morning, you scan the table to extract and aggregate last night's data on a per user basis, and store the results in Amazon S3. Users are notified via Amazon SNS mobile push notifications that new data is available, which is parsed and visualized by the mobile app.
Currently you have around 100k users who are mostly based out of North America.
You have been tasked to optimize the architecture of the backend system to lower cost.
What would you recommend? (Choose two.)

• A.Have the mobile app access Amazon DynamoDB directly Instead of JSON files stored on Amazon S3.
• B.Write data directly into an Amazon Redshift cluster replacing both Amazon DynamoDB and Amazon S3.
• C.Introduce an Amazon SQS queue to buffer writes to the Amazon DynamoDB table and reduce provisioned write throughput.
• D.Introduce Amazon Elasticache to cache reads from the Amazon DynamoDB table and reduce provisioned read throughput.
• E.Create a new Amazon DynamoDB table each day and drop the one for the previous day after its data is on Amazon S3.

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A company uses AWS Organizations to create dedicated AWS accounts for each business unit to manage each business unit's account independently upon request. The root email recipient missed a notification that was sent to the root user email address of one account. The company wants to ensure that all future notifications are not missed. Future notifications must be limited to account administrators.
Which solution will meet these requirements?

• A.Configure the company's email server to forward notification email messages that are sent to the AWS account root user email address to all users in the organization.
• B.Configure all AWS account root user email addresses as distribution lists that go to a few administrators who can respond to alerts. Configure AWS account alternate contacts in the AWS Organizations console or programmatically.
• C.Configure all AWS account root user email messages to be sent to one administrator who is responsible for monitoring alerts and forwarding those alerts to the appropriate groups.
• D.Configure all existing AWS accounts and all newly created accounts to use the same root user email address. Configure AWS account alternate contacts in the AWS Organizations console or programmatically.

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A company wants to use Amazon S3 for the secondary copy of its on-premises dataset. The company would rarely need to access this copy. The storage solution's cost should be minimal.
Which storage solution meets these requirements?

• A.S3 Standard
• B.S3 Intelligent-Tiering
• C.S3 Standard-Infrequent Access (S3 Standard-IA)
• D.S3 One Zone-Infrequent Access (S3 One Zone-IA)

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A company needs to share an Amazon S3 bucket with an external vendor. The bucket owner must be able to access all objects.
Which action should be taken to share the S3 bucket?

• A.Create an IAM policy to require users to grant bucket-owner-full control when uploading objects.
• B.Update the bucket to be a Requester Pays bucket
• C.Update the bucket to enable cross-origin resource sharing (CPORS)
• D.Create a bucket policy to require users to grant bucket-owner-full when uploading objects

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A company runs an application on Amazon EC2 Instances. The application is deployed in private subnets in three Availability Zones of the us-east-1 Region. The instances must be able to connect to the internet to download files The company wants a design that Is highly available across the Region.
Which solution should be implemented to ensure that there are no disruptions to Internet connectivity?

• A.Deploy a NAT gateway in a public subnet of each Availability Zone.
• B.Deploy a transit gateway in a private subnet of each Availability Zone.
• C.Deploy a NAT Instance In a private subnet of each Availability Zone.
• D.Deploy an internet gateway in a public subnet of each Availability Zone.

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