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Amazon AWS-Solutions-Architect-Professional Exam Syllabus Topics:

Section	Weight	Objectives
Continuous Improvement for Existing Solutions	25%	- Automation and infrastructure as code - Performance tuning - Cost optimization strategies - Operational efficiency - Security posture improvement
Design for New Solutions	29%	- Scalable and resilient architecture - High availability and disaster recovery - Security and data protection - Service selection and integration - Performance and reliability design
Design Solutions for Organizational Complexity	26%	- Cost visibility and management - Centralized governance and security - Multi-account and multi-region architecture - Compliance and regulatory requirements - Hybrid network connectivity
Accelerate Workload Migration and Modernization	20%	- Migration strategies and planning - Data transfer and synchronization - Migration validation and cutover - Application and database migration - Modernization approaches

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Amazon AWS Certified Solutions Architect - Professional AWS-Solutions-Architect-Professional Prüfungsfragen mit Lösungen (Q21-Q26):

21. Frage
Your company plans to host a large donation website on Amazon Web Services (AWS).
You anticipate a large and undetermined amount of traffic that will create many database writes.
To be certain that you do not drop any writes to a database hosted on AWS, which service should you use?

A. Amazon RDS with provisioned IOPS up to the anticipated peak write throughput.
B. Amazon Simple Queue Service (SQS) for capturing the writes and draining the queue to write to the database.
C. Amazon DynamoDB with provisioned write throughput up to the anticipated peak write throughput.
D. Amazon ElastiCache to store the writes until the writes are committed to the database.

Antwort: B

Begründung:
https://aws.amazon.com/sqs/faqs/
There is no limit on the number of messages that can be pushed onto SQS. The retention period of the SQS is 4 days by default and it can be changed to 14 days. This will make sure that no writes are missed.

22. Frage
A company is collecting a large amount of data from a fleet of loT devices Data is stored as Optimized Row Columnar (ORC) files in the Hadoop Distributed File System (HDFS) on a persistent Amazon EMR cluster.
The company's data analytics team queries the data by using SQL in Apache Presto deployed on the same EMR cluster Queries scan large amounts of data, always run for less than 15 minutes, and run only between 5 PM and 10 PM.
The company is concerned about the high cost associated with the current solution A solutions architect must propose the most cost-effective solution that will allow SQL data queries Which solution will meet these requirements?

A. Store data in Amazon S3 Use Amazon Redshift Spectrum to query data.
B. Store data in Amazon Redshift. Use Amazon Redshift to query data.
C. Store data in Amazon S3 Use the AWS Glue Data Catalog and Amazon Athena to query data
D. Store data in EMR File System (EMRFS) Use Presto in Amazon EMR to query data

Antwort: C

Begründung:
(https://stackoverflow.com/questions/50250114/athena-vs-redshift-spectrum)

23. Frage
A company has a serverless application that is deployed on AWS The application uses an Amazon API Gateway REST API and AWS Lambda to receive and process requests from other applications within the company's on-premises network The application uses a preshared API key as the authentication method.
A recent security review showed that the application was accessible from anywhere on the internet The company's security policy states that requests can be accepted only from the company's on-premises network What should a solutions architect recommend to meet this requirement?

A. Configure a request validator for API Gateway to inspect the requests and deny the execute-api Invoke action if the aws:Sourcelp attribute is not from within the company's public IP address range Redeploy the API Gateway API
B. Create a resource policy with a statement to deny the execute-api:Invoke action if the aws:Sourcelp attribute is not from within the company's public IP address range Attach that resource policy to the API Gateway API Redeploy the API
C. Create a Lambda function to inspect the requests and deny the execute-api:Invoke action if the request is not from within the company's public IP address range Configure the Lambda function as a custom authorizer for the API Gateway API Redeploy the API
D. Configure a security group with rules to allow traffic only from within the company's public IP address range. Attach the security group to the API Gateway API. and redeploy the API

Antwort: D

24. Frage
A media storage application uploads user photos to Amazon S3 for processing. End users are reporting that some uploaded photos are not being processed properly. The Application Developers trace the logs and find that AWS Lambda is experiencing execution issues when thousands of users are on the system simultaneously.
Issues are caused by:
* Limits around concurrent executions.
* The performance of Amazon DynamoDB when saving data.
Which actions can be taken to increase the performance and reliability of the application? (Choose two.)

A. Evaluate and adjust the read capacity units (RCUs) for the DynamoDB tables.
B. Evaluate and adjust the write capacity units (WCUs) for the DynamoDB tables.
C. Use S3 Transfer Acceleration to provide lower-latency access to end users.
D. Add an Amazon ElastiCache layer to increase the performance of Lambda functions.
E. Configure a dead letter queue that will reprocess failed or timed-out Lambda functions.

Antwort: B,E

Begründung:
Explanation
B:https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/HowItWorks.ReadWriteCapacityMode D:https://aws.amazon.com/blogs/compute/robust-serverless-application-design-with-aws-lambda-dlq/c

25. Frage
IAM users do not have permission to create Temporary Security Credentials for federated users and roles by default. In contrast, IAM users can call ______ without the need of any special permissions

A. GetSessionToken
B. GetSessionName
C. GetFederationToken
D. GetFederationName

Antwort: A

Begründung:
Currently the STS API command GetSessionToken is available to every IAM user in your account without previous permission. In contrast, the GetFederationToken command is restricted and explicit permissions need to be granted so a user can issue calls to this particular Action
http://docs.aws.amazon.com/STS/latest/UsingSTS/STSPermission.html

26. Frage
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