AWS-Solution-Architect-Associate Free Practice Test

- (Exam Topic 1)
A company hosts more than 300 global websites and applications. The company requires a platform to analyze more than 30 TB of clickstream data each day.
What should a solutions architect do to transmit and process the clickstream data?

1. A. Design an AWS Data Pipeline to archive the data to an Amazon S3 bucket and run an Amazon EMR duster with the data to generate analytics
2. B. Create an Auto Scaling group of Amazon EC2 instances to process the data and send it to an Amazon S3 data lake for Amazon Redshift to use tor analysis
3. C. Cache the data to Amazon CloudFron: Store the data in an Amazon S3 bucket When an object is added to the S3 bucket, run an AWS Lambda function to process the data tor analysis.
4. D. Collect the data from Amazon Kinesis Data Stream
5. E. Use Amazon Kinesis Data Firehose to transmit the data to an Amazon S3 data lake Load the data in Amazon Redshift for analysis

Correct Answer: D
https://aws.amazon.com/es/blogs/big-data/real-time-analytics-with-amazon-redshift-streaming-ingestion/

- (Exam Topic 1)
A social media company allows users to upload images to its website. The website runs on Amazon EC2 instances. During upload requests, the website resizes the images to a standard size and stores the resized images in Amazon S3. Users are experiencing slow upload requests to the website.
The company needs to reduce coupling within the application and improve website performance. A solutions architect must design the most operationally efficient process for image uploads.
Which combination of actions should the solutions architect take to meet these requirements? (Choose two.)

1. A. Configure the application to upload images to S3 Glacier.
2. B. Configure the web server to upload the original images to Amazon S3.
3. C. Configure the application to upload images directly from each user's browser to Amazon S3 through the use of a presigned URL.
4. D. Configure S3 Event Notifications to invoke an AWS Lambda function when an image is uploade
5. E. Use the function to resize the image
6. F. Create an Amazon EventBridge (Amazon CloudWatch Events) rule that invokes an AWS Lambda function on a schedule to resize uploaded images.

Correct Answer: BD

- (Exam Topic 3)
An ecommerce company is running a multi-tier application on AWS. The front-end and backend tiers run on Amazon EC2, and the database runs on Amazon RDS for MYSQL. The backend tier communities with the RDS instance. There are frequent calls to return identical database from the database that are causing performance slowdowns.
Which action should be taken to improve the performance of the backend?

1. A. Implement Amazon SNS to store the database calls.
2. B. Implement Amazon ElasticCache to cache the large database.
3. C. Implement an RDS for MySQL read replica to cache database calls.
4. D. Implement Amazon Kinesis Data Firehose to stream the calls to the database.

Correct Answer: B

- (Exam Topic 3)
An ecommerce company has noticed performance degradation of its Amazon RDS based web application. The performance degradation is attributed to an increase in the number of read-only SQL queries triggered by business analysts. A solutions architect needs to solve the problem with minimal changes to the existing web application.
What should the solutions architect recommend?

1. A. Export the data to Amazon DynamoDB and have the business analysts run their queries.
2. B. Load the data into Amazon ElastiCache and have the business analysts run their queries.
3. C. Create a read replica of the primary database and have the business analysts run their queries.
4. D. Copy the data into an Amazon Redshift cluster and have the business analysts run their queries

Correct Answer: C
Creating a read replica of the primary RDS database will offload the read-only SQL queries from the primary database, which will help to improve the performance of the web application. Read replicas are exact copies of the primary database that can be used to handle read-only traffic, which will reduce the load on the primary database and improve the performance of the web application. This solution can be implemented with minimal changes to the existing web application, as the business analysts can continue to run their queries on the read replica without modifying the code.

- (Exam Topic 3)
A company has a three-tier application on AWS that ingests sensor data from its users' devices The traffic flows through a Network Load Balancer (NLB) then to Amazon EC2 instances for the web tier and finally to EC2 instances for the application tier The application tier makes calls to a database
What should a solutions architect do to improve the security of the data in transit?

1. A. Configure a TLS listener Deploy the server certrficate on the NLB
2. B. Configure AWS Shield Advanced Enable AWS WAF on the NLB
3. C. Change the load balancer to an Application Load Balancer (ALB) Enable AWS WAF on the ALB
4. D. Encrypt the Amazon Elastic Block Store (Amazon EBS) volume on the EC2 instances by using AWS Key Management Service (AWS KMS)

Correct Answer: A
The best option to improve the security of the data in transit is to configure a TLS listener and deploy the server certificate on the NLB. This will ensure that the data is encrypted and secure as it travels through the network. Additionally, you could also configure AWS Shield Advanced and enable AWS WAF on the NLB to further protect the network from malicious attacks. Alternatively, you could also change the load balancer to an Application Load Balancer (ALB) and enable AWS WAF on the ALB. Finally, you could also encrypt the Amazon Elastic Block Store (Amazon EBS) volume on the EC2 instances by using AWS Key Management Service (AWS KMS).
You must specify an SSL certificate for a TLS listener. The load balancer uses the certificate to terminate the connection and decrypt requests from clients before routing them to targets. https://docs.aws.amazon.com/elasticloadbalancing/latest/network/create-listener.html