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Topic 4: Exam Pool D
A medical research lab produces data that is related to a new study. The lab wants to make the data available with minimum latency to clinics across the country for their on-premises, file-based applications. The data files are stored in an Amazon S3 bucket that has read- only permissions for each clinic. What should a solutions architect recommend to meet these requirements?
A. Deploy an AWS Storage Gateway file gateway as a virtual machine (VM) on premises at each clinic
B. Migrate the files to each clinic’s on-premises applications by using AWS DataSync for processing.
C. Deploy an AWS Storage Gateway volume gateway as a virtual machine (VM) on premises at each clinic.
D. Attach an Amazon Elastic File System (Amazon EFS) file system to each clinic’s on- premises servers.
Explanation: AWS Storage Gateway is a service that connects an on-premises software appliance with cloud-based storage to provide seamless and secure integration between an organization's on-premises IT environment and AWS's storage infrastructure. By deploying a file gateway as a virtual machine on each clinic's premises, the medical research lab can provide low-latency access to the data stored in the S3 bucket while maintaining read-only permissions for each clinic. This solution allows the clinics to access the data files directly from their on-premises file-based applications without the need for data transfer or migration.
A company’s infrastructure consists of Amazon EC2 instances and an Amazon RDS DB instance in a single AWS Region. The company wants to back up its data in a separate Region. Which solution will meet these requirements with the LEAST operational overhead?
A. Use AWS Backup to copy EC2 backups and RDS backups to the separate Region.
B. Use Amazon Data Lifecycle Manager (Amazon DLM) to copy EC2 backups and RDS backups to the separate Region.
C. Create Amazon Machine Images (AMIs) of the EC2 instances. Copy the AMIs to the separate Region. Create a read replica for the RDS DB instance in the separate Region.
D. Create Amazon Elastic Block Store (Amazon EBS) snapshots. Copy the EBS snapshots to the separate Region. Create RDS snapshots. Export the RDS snapshots to Amazon S3. Configure S3 Cross-Region Replication (CRR) to the separate Region.
Explanation: To back up EC2 instances and RDS DB instances in a separate Region with the least operational overhead, AWS Backup is a simple and cost-effective solution. AWS Backup can copy EC2 backups and RDS backups to another Region automatically and securely. AWS Backup also supports backup policies, retention rules, and monitoring features.
References:
What Is AWS Backup? Cross-Region Backup
A solutions architect is implementing a complex Java application with a MySQL database. The Java application must be deployed on Apache Tomcat and must be highly available. What should the solutions architect do to meet these requirements?
A. Deploy the application in AWS Lambda. Configure an Amazon API Gateway API to connect with the Lambda functions.
B. Deploy the application by using AWS Elastic Beanstalk. Configure a load-balanced environment and a rolling deployment policy.
C. Migrate the database to Amazon ElastiCache. Configure the ElastiCache security group to allow access from the application.
D. Launch an Amazon EC2 instance. Install a MySQL server on the EC2 instance. Configure the application on the server. Create an AMI. Use the AMI to create a launch template with an Auto scaling group.
Explanation: AWS Elastic Beanstalk provides an easy and quick way to deploy, manage, and scale applications. It supports a variety of platforms, including Java and Apache Tomcat. By using Elastic Beanstalk, the solutions architect can upload the Java application and configure the environment to run Apache Tomcat.
A company plans to use Amazon ElastiCache for its multi-tier web application. A solutions architect creates a Cache VPC for the ElastiCache cluster and an App VPC for the application’s Amazon EC2 instances. Both VPCs are in the us-east-1 Region.
The solutions architect must implement a solution to provide the application’s EC2 instances with access to the ElastiCache cluster.
Which solution will meet these requirements MOST cost-effectively?
A. Create a peering connection between the VPCs. Add a route table entry for the peering connection in both VPCs. Configure an inbound rule for the ElastiCache cluster’s security group to allow inbound connection from the application’s security group.
B. Create a Transit VPC. Update the VPC route tables in the Cache VPC and the App VPC to route traffic through the Transit VPC. Configure an inbound rule for the ElastiCache cluster's security group to allow inbound connection from the application’s security group.
C. Create a peering connection between the VPCs. Add a route table entry for the peering connection in both VPCs. Configure an inbound rule for the peering connection’s security group to allow inbound connection from the application’s security group.
D. Create a Transit VPC. Update the VPC route tables in the Cache VPC and the App VPC to route traffic through the Transit VPC. Configure an inbound rule for the Transit VPC’s security group to allow inbound connection from the application’s security group.
Explanation: Creating a peering connection between the VPCs allows the application's EC2 instances to communicate with the ElastiCache cluster directly and efficiently. This is the most cost- effective solution as it does not involve creating additional resources such as a Transit VPC, and it does not incur additional costs for traffic passing through the Transit VPC. Additionally, it is also more secure as it allows you to configure a more restrictive security group rule to allow inbound connection from only the application's security group.
A company runs a website that stores images of historical events. Website users need the ability to search and view images based on the year that the event in the image occurred. On average, users request each image only once or twice a year The company wants a highly available solution to store and deliver the images to users. Which solution will meet these requirements MOST cost-effectively?
A. Store images in Amazon Elastic Block Store (Amazon EBS). Use a web server that runs on Amazon EC2_
B. Store images in Amazon Elastic File System (Amazon EFS). Use a web server that runs on Amazon EC2.
C. Store images in Amazon S3 Standard. use S3 Standard to directly deliver images by using a static website.
D. Store images in Amazon S3 Standard-Infrequent Access (S3 Standard-IA). use S3 Standard-IA to directly deliver images by using a static website.
Explanation: it allows the company to store and deliver images to users in a highly available and cost-effective way. By storing images in Amazon S3 Standard, the company can use a durable, scalable, and secure object storage service that offers high availability and performance. By using S3 Standard to directly deliver images by using a static website, the company can avoid running web servers and reduce operational overhead. S3 Standard also offers low storage pricing and free data transfer within AWS Regions.
References:
Amazon S3 Storage Classes
Hosting a Static Website on Amazon S3
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