A company's reporting system delivers hundreds of .csv files to an Amazon S3 bucket each day. The company must convert these files to Apache Parquet format and must store the files in a transformed data bucket.
Which solution will meet these requirements with the LEAST development effort?

• A.Create an Amazon EMR cluster with Apache Spark installed. Write a Spark application to transform the data. Use EMR File System (EMRFS) to write files to the transformed data bucket.
• B.Create an AWS Glue crawler to discover the data. Create an AWS Glue extract, transform, and load (ETL) job to transform the data. Specify the transformed data bucket in the output step.
• C.Use AWS Batch to create a job definition with Bash syntax to transform the data and output the data to the transformed data bucket. Use the job definition to submit a job. Specify an array job as the job type.
• D.Create an AWS Lambda function to transform the data and output the data to the transformed data bucket. Configure an event notification for the S3 bucket. Specify the Lambda function as the destination for the event notification.

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A Solutions Architect is designing a three-tier web application that includes an Auto Scaling group of Amazon EC2 instances running behind an ELB Classic Load Balancer. The security team requires that all web servers must be accessible only through the Load Balancer, and that none of the web servers are directly accessible from the Internet.
How should the Architect meet these requirements?

• A.Use a Load Balancer installed on an Amazon EC2 instance.
• B.Configure the web servers' security group to deny traffic from the public Internet.
• C.Create an Amazon CloudFront distribution in front of the ELB Classic Load Balancer.
• D.Configure the web tier security group to allow only traffic from the ELB Classic Load Balancer.

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A company is rolling out a new web service, but is unsure how many customers the service will attract.
However, the company is unwilling to accept any downtime.
What could a Solutions Architect recommend to the company in order to keep track of customers' current session date?

• A.AWS CloudTrail
• B.Amazon DynamoDB
• C.Amazon RDS
• D.Amazon EC2

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A web company is looking to implement an external payment service into their highly available application deployed in a VPC Their application EC2 instances are behind a public lacing ELB Auto scaling is used to add additional instances as traffic increases under normal load the application runs 2 instances in the Auto Scaling group but at peak it can scale 3x in size. The application instances need to communicate with the payment service over the Internet which requires whitelisting of all public IP addresses used to communicate with it. A maximum of 4 whitelisting IP addresses are allowed at a time and can be added through an API.
How should they architect their solution?

• A.Whitelist the VPC Internet Gateway Public IP and route payment requests through the Internet Gateway.
• B.Whitelist the ELB IP addresses and route payment requests from the Application servers through the ELB.
• C.Automatically assign public IP addresses to the application instances in the Auto Scaling group and run a script on boot that adds each instances public IP address to the payment validation whitelist API.
• D.Route payment requests through two NAT instances setup for High Availability and whitelist the Elastic IP addresses attached to the MAT instances.

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You have launched an Amazon Elastic Compute Cloud (EC2) instance into a public subnet with a primary private I P address assigned, an internet gateway is attached to the VPC, and the public route table is configured to send all Internet-based traffic to the Internet gateway. The instance security group is set to allow all outbound traffic but cannot access the internet. Why is the Internet unreachable from this instance?

• A.The instance does not have a public IP address.
• B.The instance security group must allow all inbound traffic.
• C.The internet gateway security group must allow all outbound traffic.
• D.The instance "Source/Destination check" property must be enabled.

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