AWS-Solution-Architect-Associate Free Practice Test

- (Topic 4)
A company wants lo build a web application on AWS. Client access requests to the website are not predictable and can be idle for a long time. Only customers who have paid a subscription fee can have the ability to sign in and use the web application.
Which combination of steps will meet these requirements MOST cost-effectively? (Select THREE.)

1. A. Create an AWS Lambda function to retrieve user information from Amazon DynamoD
2. B. Create an Amazon API Gateway endpoint to accept RESTful API
3. C. Send the API calls to the Lambda function.
4. D. Create an Amazon Elastic Container Service (Amazon ECS) service behind an Application Load Balancer to retrieve user information from Amazon RD
5. E. Create an Amazon API Gateway endpoint to accept RESTful API
6. F. Send the API calls to the Lambda function.
7. G. Create an Amazon Cogmto user pool to authenticate users
8. H. Create an Amazon Cognito identity pool to authenticate users.
9. I. Use AWS Amplify to serve the frontend web content with HTM
10. J. CSS, and J
11. K. Use an integrated Amazon CloudFront configuration.
12. L. Use Amazon S3 static web hosting with PH
13. M. CS
14. N. and J
15. O. Use Amazon CloudFront to serve the frontend web content.

Correct Answer: ACE
https://docs.aws.amazon.com/AmazonS3/latest/userguide/WebsiteHosting.html

- (Topic 3)
A company runs a web application on Amazon EC2 instances in multiple Availability Zones. The EC2 instances are in private subnets. A solutions architect implements an internet- facing Application Load Balancer (ALB) and specifies the EC2 instances as the target group. However, the internet traffic is not reaching the EC2 instances.
How should the solutions architect reconfigure the architecture to resolve this issue?

1. A. Replace the ALB with a Network Load Balance
2. B. Configure a NAT gateway in a public subnet to allow internet traffic.
3. C. Move the EC2 instances to public subnet
4. D. Add a rule to the EC2 instances’ security groups to allow outbound traffic to 0.0.0.0/0.
5. E. Update the route tables for the EC2 instances’ subnets to send 0.0.0.0/0 traffic through the internet gateway rout
6. F. Add a rule to the EC2 instances’ security groups to allow outbound traffic to 0.0.0.0/0.
7. G. Create public subnets in each Availability Zon
8. H. Associate the public subnets with the AL
9. I. Update the route tables for the public subnets with a route to the private subnets.

Correct Answer: D
https://aws.amazon.com/premiumsupport/knowledge-center/public-load-balancer-private-ec2/

- (Topic 4)
A company has migrated multiple Microsoft Windows Server workloads to Amazon EC2 instances that run in the us-west-1 Region. The company manually backs up the workloads to create an image as needed.
In the event of a natural disaster in the us-west-1 Region, the company wants to recover workloads quickly in the us-west-2 Region. The company wants no more than 24 hours of data loss on the EC2 instances. The company also wants to automate any backups of the EC2 instances.
Which solutions will meet these requirements with the LEAST administrative effort? (Select TWO.)

1. A. Create an Amazon EC2-backed Amazon Machine Image (AMI) lifecycle policy to create a backup based on tag
2. B. Schedule the backup to run twice dail
3. C. Copy the image on demand.
4. D. Create an Amazon EC2-backed Amazon Machine Image (AMI) lifecycle policy to create a backup based on tag
5. E. Schedule the backup to run twice dail
6. F. Configure the copy to the us-west-2 Region.
7. G. Create backup vaults in us-west-1 and in us-west-2 by using AWS Backu
8. H. Create a backup plan for the EC2 instances based on tag value
9. I. Create an AWS Lambda function to run as a scheduled job to copy the backup data to us-west-2.
10. J. Create a backup vault by using AWS Backu
11. K. Use AWS Backup to create a backup plan for the EC2 instances based on tag value
12. L. Define the destination for the copy as us-west-2. Specify the backup schedule to run twice daily.
13. M. Create a backup vault by using AWS Backu
14. N. Use AWS Backup to create a backup plan for the EC2 instances based on tag value
15. O. Specify the backup schedule to run twice dail
16. P. Copy on demand to us-west-2.

Correct Answer: BD
Option B suggests using an EC2-backed Amazon Machine Image (AMI) lifecycle policy to automate the backup process. By configuring the policy to run twice daily and specifying the copy to the us-west-2 Region, the company can ensure regular backups are created and copied to the alternate region. Option D proposes using AWS Backup, which provides a centralized backup management solution. By creating a backup vault and backup plan based on tag values, the company can automate the backup process for the EC2 instances. The backup schedule can be set to run twice daily, and the destination for the copy can be defined as the us-west-2 Region.
Both options automate the backup process and include copying the backups to the us- west-2 Region, ensuring data resilience in the event of a disaster. These solutions minimize administrative effort by leveraging automated backup and copy mechanisms provided by AWS services.

- (Topic 3)
An online learning company is migrating to the AWS Cloud. The company maintains its student records in a PostgreSQL database. The company needs a solution in which its data is available and online across multiple AWS Regions at all times.
Which solution will meet these requirements with the LEAST amount of operational overhead?

1. A. Migrate the PostgreSQL database to a PostgreSQL cluster on Amazon EC2 instances.
2. B. Migrate the PostgreSQL database to an Amazon RDS for PostgreSQL DB instance with the Multi-AZ feature turned on.
3. C. Migrate the PostgreSQL database to an Amazon RDS for PostgreSQL DB instanc
4. D. Create a read replica in another Region.
5. E. Migrate the PostgreSQL database to an Amazon RDS for PostgreSQL DB instanc
6. F. Set up DB snapshots to be copied to another Region.

Correct Answer: C
" online across multiple AWS Regions at all times". Currently only Read Replica supports cross-regions , Multi-AZ does not support cross-region (it works only in same region) https://aws.amazon.com/about-aws/whats-new/2018/01/amazon-rds-read-replicas-now-support-multi-az-deployments/

- (Topic 2)
A company hosts a website analytics application on a single Amazon EC2 On-Demand Instance. The analytics software is written in PHP and uses a MySQL database. The analytics software, the web server that provides PHP, and the database server are all hosted on the EC2 instance. The application is showing signs of performance degradation during busy times and is presenting 5xx errors. The company needs to make the application scale seamlessly.
Which solution will meet these requirements MOST cost-effectively?

1. A. Migrate the database to an Amazon RDS for MySQL DB instanc
2. B. Create an AMI of the web applicatio
3. C. Use the AMI to launch a second EC2 On-Demand Instanc
4. D. Use an Application Load Balancer to distribute the load to each EC2 instance.
5. E. Migrate the database to an Amazon RDS for MySQL DB instanc
6. F. Create an AMI of the web applicatio
7. G. Use the AMI to launch a second EC2 On-Demand Instanc
8. H. Use Amazon Route 53 weighted routing to distribute the load across the two EC2 instances.
9. I. Migrate the database to an Amazon Aurora MySQL DB instanc
10. J. Create an AWS Lambda function to stop the EC2 instance and change the instance typ
11. K. Create an Amazon CloudWatch alarm to invoke the Lambda function when CPU utilization surpasses 75%.
12. L. Migrate the database to an Amazon Aurora MySQL DB instanc
13. M. Create an AMI of the web applicatio
14. N. Apply the AMI to a launch templat
15. O. Create an Auto Scaling group with the launch template Configure the launch template to use a Spot Flee
16. P. Attach an Application Load Balancer to the Auto Scaling group.

Correct Answer: D
Migrate the database to Amazon Aurora MySQL - this will let the DB scale on it's own; it'll scale automatically without needing adjustment. Create AMI of the web app and using a launch template - this will make the creating of any future instances of the app seamless. They can then be added to the auto scaling group which will save them money as it will scale up and down based on demand. Using a spot fleet to launch instances- This solves the "MOST cost-effective" portion of the question as spot instances come at a huge discount at the cost of being terminated at any time Amazon deems fit. I think this is why there's a bit of disagreement on this. While it's the most cost effective, it would be a terrible choice if amazon were to terminate that spot instance during a busy period.