A company has a workflow that sends video files from their on-premise system to AWS for transcoding. They use EC2 worker instances that pull transcoding jobs from SQS. Why is SQS an appropriate service for this scenario?

• A.SQS helps to facilitate horizontal scaling of encoding tasks.
• B.SQS checks the health of the worker instances.
• C.SQS synchronously provides transcoding output.
• D.SQS guarantees the order of the messages.

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A user has created a VPC with CIDR 20.0.0.0/16. The user has created one subnet with CIDR 20.0.0.0/16 in this VPC. The user is trying to create another subnet with the same VPC for CIDR 20.0.0.1/24.
What will happen in this scenario?

• A.The VPC will modify the first subnet CIDR automatically to allow the second subnet IP range
• B.The second subnet will be created
• C.It will throw a CIDR overlaps error
• D.It is not possible to create a subnet with the same CIDR as VPC

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After an Amazon VPC instance is launched, can I change the VPC security groups it belongs to?

• A.Only if the tag "VPC_Change_Group" is true
• B.Yes. You can.
• C.Only if you are the root user
• D.No. You cannot.

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A team has an application that detects new objects being uploaded into an Amazon S3 bucket. The uploads trigger AWS Lambda function to write object metadata into an Amazon DynamoDB table and an Amazon RDS for PostgreSQL database.
Which action should the team take to ensure high availability?

• A.Create a DynamoDB stream for the DynamoDB table.
• B.Enable Multi-AZ on the RDS for PostgreSQL database.
• C.Create a Lambda function for each Availability Zone the application is deployed in.
• D.Enable Cross-Region Replication in the S3 bucket.

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You are playing around with setting up stacks using JSON templates in CloudFormation to try and understand them a little better. You have set up about 5 or 6 but now start to wonder if you are being charged for these stacks. What is AWS's billing policy regarding stack resources?

• A.You are not charged for the stack resources if they are not taking any traffic.
• B.You are charged for the stack resources for the time they were operating (even if you deleted the stack right away)
• C.You are charged for the stack resources for the time they were operating (but not if you deleted the stack within 60 minutes)
• D.You are charged for the stack resources for the time they were operating (but not if you deleted the stack within 30 minutes)

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