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Amazon AWS Certified Solutions Architect - Associate (SAA-C03) Exam SAA-C03 Prüfungsfragen mit Lösungen (Q323-Q328):

323. Frage
A company is running a popular social media website. The website gives users the ability to upload images to share with other users. The company wants to make sure that the images do not contain inappropriate content.
The company needs a solution that minimizes development effort.
What should a solutions architect do to meet these requirements?

• A. Use Amazon Rekognition to detect inappropriate content. Use human review for low-confidence predictions.
• B. Use AWS Fargate to deploy a custom machine learning model to detect inappropriate content. Use ground truth to label low-confidence predictions.
• C. Use Amazon SageMaker to detect inappropriate content. Use ground truth to label low-confidence predictions.
• D. Use Amazon Comprehend to detect inappropriate content. Use human review for low-confidence predictions.

Antwort: A Begründung:
Explanation
https://docs.aws.amazon.com/rekognition/latest/dg/moderation.html?pg=ln&sec=ft
https://docs.aws.amazon.com/rekognition/latest/dg/a2i-rekognition.html
324. Frage
A company hosts an application on AWS Lambda functions mat are invoked by an Amazon API Gateway API The Lambda functions save customer data to an Amazon Aurora MySQL database Whenever the company upgrades the database, the Lambda functions fail to establish database connections until the upgrade is complete The result is that customer data Is not recorded for some of the event A solutions architect needs to design a solution that stores customer data that is created during database upgrades Which solution will meet these requirements?

• A. Persist the customer data to Lambda local storage. Configure new Lambda functions to scan the local storage to save the customer data to the database.
• B. Store the customer data m an Amazon Simple Queue Service (Amazon SOS) FIFO queue Create a new Lambda function that polls the queue and stores the customer data in the database
• C. Increase the run time of me Lambda functions to the maximum Create a retry mechanism in the code that stores the customer data in the database
• D. Provision an Amazon RDS proxy to sit between the Lambda functions and the database Configure the Lambda functions to connect to the RDS proxy

Antwort: B Begründung:
Explanation
https://www.learnaws.org/2020/12/13/aws-rds-proxy-deep-dive/
RDS proxy can improve application availability in such a situation by waiting for the new database instance to be functional and maintaining any requests received from the application during this time. The end result is that the application is more resilient to issues with the underlying database.
This will enable solution to hold data till the time DB comes back to normal. RDS proxy is to optimally utilize the connection between Lambda and DB. Lambda can open multiple connection concurrently which can be taxing on DB compute resources, hence RDS proxy was introduced to manage and leverage these connections efficiently.
325. Frage
A company is building an internal application that processes loans, accruals, and interest rates for their clients. They require a storage service that is able to handle future increases in storage capacity of up to 16 TB and can provide the lowest-latency access to their data. The web application will be hosted in a single m5ad.24xlarge Reserved EC2 instance that will process and store data to the storage service.
Which of the following storage services would you recommend?

• A. Storage Gateway
• B. EBS
• C. EFS
• D. S3

Antwort: B Begründung:
Amazon Web Services (AWS) offers cloud storage services to support a wide range of storage workloads such as Amazon S3, EFS and EBS. Amazon EFS is a file storage service for use with Amazon EC2. Amazon EFS provides a file system interface, file system access semantics (such as strong consistency and file locking), and concurrently-accessible storage for up to thousands of Amazon EC2 instances. Amazon S3 is an object storage service. Amazon S3 makes data available through an Internet API that can be accessed anywhere. Amazon EBS is a block-level storage service for use with Amazon EC2. Amazon EBS can deliver performance for workloads that require the lowest-latency access to data from a single EC2 instance. You can also increase EBS storage for up to 16TB or add new volumes for additional storage.
In this scenario, the company is looking for a storage service which can provide the lowest-latency access to their data which will be fetched by a single m5ad.24xlarge Reserved EC2 instance. This type of workloads can be supported better by using either EFS or EBS but in this case, the latter is the most suitable storage service. As mentioned above, EBS provides the lowest-latency access to the data for your EC2 instance since the volume is directly attached to the instance. In addition, the scenario does not require concurrently-accessible storage since they only have one instance. Hence, the correct answer is EBS.


Storage Gateway is incorrect since this is primarily used to extend your on-premises storage to your AWS Cloud.
S3 is incorrect because although this is also highly available and highly scalable, it still does not provide the lowest-latency access to the data, unlike EBS. Remember that S3 does not reside within your VPC by default, which means the data will traverse the public Internet that may result to higher latency. You can set up a VPC Endpoint for S3 yet still, its latency is greater than that of EBS.
EFS is incorrect because the scenario does not require concurrently-accessible storage since the internal application is only hosted in one instance. Although EFS can provide low latency data access to the EC2 instance as compared with S3, the storage service that can provide the lowest latency access is still EBS.
References:
https://aws.amazon.com/ebs/
https://aws.amazon.com/efs/faq/
Check out this Amazon EBS Cheat Sheet:
https://tutorialsdojo.com/amazon-ebs/
326. Frage
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?

• A. Deploy an Application Load Balancer (ALB) and an associated target group. Associate the target group with the Auto Scaling group. Use the ALB as an AWS Global Accelerator endpoint in each Region.
• B. Deploy an Application Load Balancer (ALB) and an associated target group. Associate the target group with the Auto Scaling group. Create an Amazon Route 53 weighted record that points to aliases for each ALB. Deploy an Amazon CloudFront distribution that uses the weighted record as an origin.
• C. Deploy a Network Load Balancer (NLB) and an associated target group. Associate the target group with the Auto Scaling group. Use the NLB as an AWS Global Accelerator endpoint in each Region.
• D. Deploy a Network Load Balancer (NLB) and an associated target group. Associate the target group with the Auto Scaling group. Create an Amazon Route 53 latency record that points to aliases for each NLB. Create an Amazon CloudFront distribution that uses the latency record as an origin.

Antwort: D
327. Frage
A company has applications that run on Amazon EC2 instances in a VPC. One of the applications needs to call the Amazon S3 API to store and read objects. According to the company's security regulations, no traffic from the applications is allowed to travel across the internet.
Which solution will meet these requirements?

• A. Create an S3 bucket in a private subnet.
• B. Configure an S3 gateway endpoint.
• C. Configure an S3 interface endpoint.
• D. Create an S3 bucket in the same Region as the EC2 instance.

Antwort: B Begründung:
https://docs.aws.amazon.com/AmazonS3/latest/userguide/privatelink-interface-endpoints.html#types-of-vpc-endpoints-for-s3
https://docs.aws.amazon.com/vpc/latest/userguide/vpc-endpoints-s3.html
328. Frage
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