SAA-C03 Free Practice Test

- (Topic 3)
A company is using Amazon CloudFront with this website. The company has enabled logging on the CloudFront distribution, and logs are saved in one of the company's Amazon S3 buckets The company needs to perform advanced analyses on the logs and build visualizations
What should a solutions architect do to meet these requirements'?

1. A. Use standard SQL queries in Amazon Athena to analyze the CloudFront togs in the S3 bucket Visualize the results with AWS Glue
2. B. Use standard SQL queries in Amazon Athena to analyze the CloudFront togs in the S3 bucket Visualize the results with Amazon QuickSight
3. C. Use standard SQL queries in Amazon DynamoDB to analyze the CloudFront logs m the S3 bucket Visualize the results with AWS Glue
4. D. Use standard SQL queries in Amazon DynamoDB to analyze the CtoudFront logs m the S3 bucket Visualize the results with Amazon QuickSight

Correct Answer: B
https://docs.aws.amazon.com/quicksight/latest/user/welcome.html
Using Athena to query the CloudFront logs in the S3 bucket and QuickSight to visualize the results is the best solution because it is cost-effective, scalable, and requires no infrastructure setup. It also provides a robust solution that enables the company to perform advanced analysis and build interactive visualizations without the need for a dedicated team of developers.

- (Topic 4)
A company is planning to use an Amazon DynamoDB table for data storage. The company is concerned about cost optimization. The table will not be used on most mornings. In the evenings, the read and write traffic will often be unpredictable. When traffic spikes occur, they will happen very quickly.
What should a solutions architect recommend?

1. A. Create a DynamoDB table in on-demand capacity mode.
2. B. Create a DynamoDB table with a global secondary index
3. C. Create a DynamoDB table with provisioned capacity and auto scaling.
4. D. Create a DynamoDB table in provisioned capacity mode, and configure it as a global table

Correct Answer: A
Provisioned capacity is best if you have relatively predictable application traffic, run applications whose traffic is consistent, and ramps up or down gradually. On- demand capacity mode is best when you have unknown workloads, unpredictable application traffic and also if you only want to pay exactly for what you use. The on-demand pricing model is ideal for bursty, new, or unpredictable workloads whose traffic can spike in seconds or minutes, and when under-provisioned capacity would impact the user experience. https://docs.aws.amazon.com/wellarchitected/latest/serverless-applications- lens/capacity.html

- (Topic 4)
An ecommerce application uses a PostgreSQL database that runs on an Amazon EC2 instance. During a monthly sales event, database usage increases and causes database connection issues for the application. The traffic is unpredictable for subsequent monthly sales events, which impacts the sales forecast. The company needs to maintain performance when there is an unpredictable increase in traffic.
Which solution resolves this issue in the MOST cost-effective way?

1. A. Migrate the PostgreSQL database to Amazon Aurora Serverless v2.
2. B. Enable auto scaling for the PostgreSQL database on the EC2 instance to accommodate increased usage.
3. C. Migrate the PostgreSQL database to Amazon RDS for PostgreSQL with a larger instance type
4. D. Migrate the PostgreSQL database to Amazon Redshift to accommodate increased usage

Correct Answer: A
Amazon Aurora Serverless v2 is a cost-effective solution that can automatically scale the database capacity up and down based on the application’s needs. It can handle unpredictable traffic spikes without requiring any provisioning or management of database instances. It is compatible with PostgreSQL and offers high performance, availability, and durability1. References: 1: AWS Ramp-Up Guide: Architect2, page 312: AWS Certified Solutions Architect - Associate exam guide3, page 9.

- (Topic 4)
A company runs an application on Amazon EC2 instances. The company needs to implement a disaster recovery (DR) solution for the application. The DR solution needs to have a recovery time objective (RTO) of less than 4 hours. The DR solution also needs to use the fewest possible AWS resources during normal operations.
Which solution will meet these requirements in the MOST operationally efficient way?

1. A. Create Amazon Machine Images (AMIs) to back up the EC2 instance
2. B. Copy the AMIs to a secondary AWS Regio
3. C. Automate infrastructure deployment in the secondary Region by using AWS Lambda and custom scripts.
4. D. Create Amazon Machine Images (AMIs) to back up the EC2 instance
5. E. Copy the AMIs to a secondary AWS Regio
6. F. Automate infrastructure deployment in the secondary Region by using AWS CloudFormation.
7. G. Launch EC2 instances in a secondary AWS Regio
8. H. Keep the EC2 instances in the secondary Region active at all times.
9. I. Launch EC2 instances in a secondary Availability Zon
10. J. Keep the EC2 instances in the secondary Availability Zone active at all times.

Correct Answer: B
it allows the company to implement a disaster recovery (DR) solution for the application that has a recovery time objective (RTO) of less than 4 hours and uses the fewest possible AWS resources during normal operations. By creating Amazon Machine Images (AMIs) to back up the EC2 instances and copying the AMIs to a secondary AWS Region, the company can create point-in-time snapshots of the application and store them in a different geographical location. By automating infrastructure deployment in the secondary Region by using AWS CloudFormation, the company can quickly launch a stack of resources from a template in case of a disaster. This is a cost-effective and operationally efficient way to implement a DR solution for EC2 instances. References:
✑ Amazon Machine Images (AMI)
✑ Copying an AMI
✑ AWS CloudFormation
✑ Working with Stacks

- (Topic 4)
A company seeks a storage solution for its application The solution must be highly available and scalable. The solution also must function as a file system, be mountable by multiple Linux instances in AWS and on premises through native protocols, and have no minimum size requirements. The company has set up a Site-to-Site VPN for access from its on-premises network to its VPC.
Which storage solution meets these requirements?

1. A. Amazon FSx Multi-AZ deployments
2. B. Amazon Elastic Block Store (Amazon EBS) Multi-Attach volumes
3. C. Amazon Elastic File System (Amazon EFS) with multiple mount targets
4. D. Amazon Elastic File System (Amazon EFS) with a single mount target and multiple access points

Correct Answer: C
Amazon EFS is a fully managed file system that can be mounted by multiple Linux instances in AWS and on premises through native protocols such as NFS and SMB. Amazon EFS has no minimum size requirements and can scale up and down automatically as files are added and removed. Amazon EFS also supports high availability and durability by allowing multiple mount targets in different Availability Zones within a region. Amazon EFS meets all the requirements of the question, while the other options do not. References:
✑ https://aws.amazon.com/efs/
✑ https://docs.aws.amazon.com/wellarchitected/latest/performance-efficiency- pillar/storage-architecture-selection.html
✑ https://aws.amazon.com/blogs/storage/from-on-premises-to-aws-hybrid-cloud- architecture-for-network-file-shares/