SAA-C03 Free Practice Test

- (Exam Topic 3)
A company wants to use high performance computing (HPC) infrastructure on AWS for financial risk modeling. The company's HPC workloads run on Linux. Each HPC workflow runs on hundreds of Amazon EC2 Spot Instances, is shorl-lived, and generates thousands of output files that are ultimately stored in persistent storage for analytics and long-term future use.
The company seeks a cloud storage solution that permits the copying of on-premises data to long-term persistent storage to make data available for processing by all EC2 instances. The solution should also be a high performance file system that is integrated with persistent storage to read and write datasets and output files.
Which combination of AWS services meets these requirements?

1. A. Amazon FSx for Lustre integrated with Amazon S3
2. B. Amazon FSx for Windows File Server integrated with Amazon S3
3. C. Amazon S3 Glacier integrated with Amazon Elastic Block Store (Amazon EBS)
4. D. Amazon S3 bucket with a VPC endpoint integrated with an Amazon Elastic Block Store (Amazon EBS) General Purpose SSD (gp2) volume

Correct Answer: A
https://aws.amazon.com/fsx/lustre/
Amazon FSx for Lustre is a fully managed service that provides cost-effective, high-performance, scalable storage for compute workloads. Many workloads such as machine learning, high performance computing (HPC), video rendering, and financial simulations depend on compute instances accessing the same set of data through high-performance shared storage.

- (Exam Topic 2)
A company wants to direct its users to a backup static error page if the company's primary website is unavailable. The primary website's DNS records are hosted in Amazon Route 53. The domain is pointing to an Application Load Balancer (ALB). The company needs a solution that minimizes changes and infrastructure overhead.
Which solution will meet these requirements?

1. A. Update the Route 53 records to use a latency routing polic
2. B. Add a static error page that is hosted in an Amazon S3 bucket to the records so that the traffic is sent to the most responsive endpoints.
3. C. Set up a Route 53 active-passive failover configuratio
4. D. Direct traffic to a static error page that is hosted in an Amazon S3 bucket when Route 53 health checks determine that the ALB endpoint is unhealthy.
5. E. Set up a Route 53 active-active configuration with the ALB and an Amazon EC2 instance that hosts a static error page as endpoint
6. F. Configure Route 53 to send requests to the instance only if the health checks fail for the ALB.
7. G. Update the Route 53 records to use a multivalue answer routing polic
8. H. Create a health chec
9. I. Direct traffic to the website if the health check passe
10. J. Direct traffic to a static error page that is hosted in Amazon S3 if the health check does not pass.

Correct Answer: B

- (Exam Topic 1)
A company provides a Voice over Internet Protocol (VoIP) service that uses UDP connections. The service consists of Amazon EC2 instances that run in an Auto Scaling group. The company has deployments across multiple AWS Regions.
The company needs to route users to the Region with the lowest latency. The company also needs automated failover between Regions.
Which solution will meet these requirements?

1. A. Deploy a Network Load Balancer (NLB) and an associated target grou
2. B. Associate the target group with the Auto Scaling grou
3. C. Use the NLB as an AWS Global Accelerator endpoint in each Region.
4. D. Deploy an Application Load Balancer (ALB) and an associated target grou
5. E. Associate the target group with the Auto Scaling grou
6. F. Use the ALB as an AWS Global Accelerator endpoint in each Region.
7. G. Deploy a Network Load Balancer (NLB) and an associated target grou
8. H. Associate the target group with the Auto Scaling grou
9. I. Create an Amazon Route 53 latency record that points to aliases for each NL
10. J. Create an Amazon CloudFront distribution that uses the latency record as an origin.
11. K. Deploy an Application Load Balancer (ALB) and an associated target grou
12. L. Associate the target group with the Auto Scaling grou
13. M. Create an Amazon Route 53 weighted record that points to aliases for each AL
14. N. Deploy an Amazon CloudFront distribution that uses the weighted record as an origin.

Correct Answer: D
https://aws.amazon.com/global-accelerator/faqs/
HTTP /HTTPS - ALB ; TCP and UDP - NLB; Lowest latency routing and more throughput. Also supports failover, uses Anycast Ip addressing - Global Accelerator Caching at Egde Locations – Cloutfront
WS Global Accelerator automatically checks the health of your applications and routes user traffic only to healthy application endpoints. If the health status changes or you make configuration updates, AWS Global Accelerator reacts instantaneously to route your users to the next available endpoint..

- (Exam Topic 3)
A company is launching an application on AWS. The application uses an Application Load (ALB) to direct traffic to at least two Amazon EC2 instances in a single target group.
The instances are in an Auto Scaling group for each environment. The company requires a development and a production environment. The production environment will have periods of high traffic.
Which solution will configure the development environment MOST cost-effectively?

1. A. Reconfigure the target group in the development environment to have one EC2 instance as a target.
2. B. Change the ALB balancing algorithm to least outstanding requests.
3. C. Reduce the size of the EC2 instances in both environments.
4. D. Reduce the maximum number of EC2 instances in the development environment’s Auto Scaling group

Correct Answer: D
This option will configure the development environment in the most cost-effective way as it reduces the number of instances running in the development environment and therefore reduces the cost of running the application. The development environment typically requires less resources than the production environment, and it is unlikely that the development environment will have periods of high traffic that would require a large number of instances. By reducing the maximum number of instances in the development environment's Auto Scaling group, the company can save on costs while still maintaining a functional development environment.

- (Exam 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-deploy