Question 1

A leading IT consulting company has an application which processes a large stream of financial data by an Amazon ECS Cluster then stores the result to a DynamoDB table. You have to design a solution to detect new entries in the DynamoDB table then automatically trigger a Lambda function to run some tests to verify the processed data.

What solution can be easily implemented to alert the Lambda function of new entries while requiring minimal configuration change to your architecture?

Options :

A : Enable DynamoDB Streams to capture table activity and automatically trigger the Lambda function.

B : Use CloudWatch Alarms to trigger the Lambda function whenever a new entry is created in the DynamoDB table.

C : Invoke the Lambda functions using SNS each time that the ECS Cluster successfully processed financial data.

D : Use Systems Manager Automation to detect new entries in the DynamoDB table then automatically invoke the Lambda function for processing.

Answer: A

Question 2

A company has several microservices that send messages to an Amazon SQS queue and a backend application that poll the queue to process the messages. The company also has a Service Level Agreement (SLA) which defines the acceptable amount of time that can elapse from the point when the messages are received until a response is sent. The backend operations are I/O-intensive as the number of messages is constantly growing, causing the company to miss its SLA. The Solutions Architect must implement a new architecture that improves the application's processing time and load management.Which of the following is the MOST effective solution that can satisfy the given requirement?

Options :

A : Create an AMI of the backend application-s EC2 instance and replace it with a larger instance size.

B : Create an AMI of the backend application-s EC2 instance. Use the image to set up an Auto Scaling group and configure a target tracking scaling policy based on the CPUUtilization metric with a target value of 80%.

C : Create an AMI of the backend application-s EC2 instance and launch it to a cluster placement group.

D : Create an AMI of the backend application-s EC2 instance. Use the image to set up an Auto Scaling group and configure a target tracking scaling policy based on the ApproximateAgeOfOldestMessage metric.

Answer: D

Question 3

A company needs to optimize its Amazon S3 storage costs for an application that generates many files that cannot be recreated. Each file is approximately 5 MB and is stored in Amazon S3 Standard storage.The company must store the files for 4 years before the files can be deleted. The files must be immediately accessible. The files are frequently accessed in the first 30 days of object creation, but they are rarely accessed after the first 30 days.Which solution will meet these requirements MOST cost-effectively?

Options :

A : Create an S3 Lifecycle policy to move the files to S3 Glacier Instant Retrieval 30 days after object creation. Delete the files 4 years after object creation.

B : Create an S3 Lifecycle policy to move the files to S3 One Zone-Infrequent Access (S3 One Zone-IA) 30 days after object creation. Delete the files 4 years after object creation.

C : Create an S3 Lifecycle policy to move the files to S3 Standard-Infrequent Access (S3 Standard-IA) 30 days after object creation. Delete the files 4 years after object creation.

D : create an S3 Lifecycle policy to move the files to S3 Standard-Infrequent Access (S3 Standard-IA) 30 days after object creation. Move the files to S3 Glacier Flexible Retrieval 4 years after object creation.

Answer: C

Question 4

A company has a High Performance Computing (HPC) cluster that is composed of EC2 Instances with Provisioned IOPS volume to process transaction-intensive, low-latency workloads. The Solutions Architect must maintain high IOPS while keeping the latency down by setting the optimal queue length for the volume. The size of each volume is 10 GiB.Which of the following is the MOST suitable configuration that the Architect should set up?

Options :

A : Set the IOPS to 800 then maintain a low queue length.

B : Set the IOPS to 600 then maintain a high queue length.

C : Set the IOPS to 500 then maintain a low queue length.

D : Set the IOPS to 400 then maintain a low queue length.

Answer: C

Question 5

A company is hosting a web application on AWS using a single Amazon EC2 instance that stores useruploaded documents in an Amazon EBS volume. For better scalability and availability, the company duplicated the architecture and created a second EC2 instance and EBS volume in another Availability Zone, placing both behind an Application Load Balancer. After completing this change, users reported that, each time they refreshed the website, they could see one subset of their documents or the other, but never all of the documents at the same time. What should a solutions architect propose to ensure users see all of their documents at once?

Options :

A : Copy the data so both EBS volumes contain all the documents

B : Configure the Application Load Balancer to direct a user to the server with the documents

C :

Copy the data from both EBS volumes to Amazon EFS. Modify the application to save new documents to Amazon EFS

D :

Configure the Application Load Balancer to send the request to both servers. Return each document from the correct server

Answer: C

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