WGU-D319 PRE-ASSESSMENT: AWS Cloud Architecture (Already Passed)2023
An enterprise wants to build an application for selling concert tickets, with a web layer and an application layer. Which Amazon service should be used so ticket orders are not lost if the application layer fails? - Answer SQS
To comply with its disaster recovery requirements, an enterprise is required to store copies of all data in a specific Amazon S3 bucket in an additional Region. How should this requirement be fulfilled? - Answer Enable versioning for the source bucket and configure Cross-Region Replication
An application is deployed in the us-west-1 and eu-west-1 Regions, and the users should be sent to the Region with the fastest response for them, regardless of their location. The solution must minimize administrative effort. Which routing policy should be used? - Answer Latency
A notification is sent to an Amazon SQS queue when an object is uploaded to an Amazon S3 bucket. An Amazon ECS cluster processes messages from the queue. The required queue size fluctuates based on the number of incoming messages and the processing speed. The company needs to design a scaling strategy for auto scaling that will minimize the queue size. Which metric should be used for auto scaling to minimize the queue size? - Answer Amazon SQS messages
A company hosts a website from two EC2 instances. Users access the website through an Elastic Load Balancer (ELB). The company needs to ensure the website is highly available if one or more of the EC2 instances are unavailable. Which solution should this company use? - Answer Configure the ELB to implement Auto Scaling based on health checks
A company plans to migrate a legacy application to EC2 with no modifications to the application. The company hopes to add modern cloud features to immediately respond to changing needs. Which cloud feature will achieve this goal? - Answer Auto scaling
A company plans to migrate a legacy application to EC2 with no modifications to the application. The application has regular seasonal increases in demand, and it must automatically adapt to these needs. Which scaling option should be included in the migration? - Answer Scheduled
A company plans to migrate a legacy application to Amazon EC2 with no modifications to the application. The application constantly changes demands with no patterns, and it must automatically adapt to these needs. Which scaling option should be included in the migration? - Answer Dynamic
A company plans to migrate a legacy application to Amazon EC2 with no modifications to the application. Once the application has completed a trial in the cloud, the company needs to use machine learning algorithms to adapt the WGU-D319 PRE-ASSESSMENT: AWS Cloud Architecture (Already Passed)2023
application to changing demands. Which scaling option should be used? - Answer Predictive
A web application uses a web server with a separate database server. The database
provides results to the web server. Users report long delays in receiving their results.
Logs reveal that the CPU utilization metric for the web server consistently reaches 100%. Performance metrics for the database are nominal. How can the response time be improved? - Answer By scaling the web server layer through the addition of web servers
An administrator is concerned that a consumer may fail and not receive every message immediately. The administrator chooses to use Amazon Simple Queue Service (Amazon SQS) to ensure the consumer will be able to receive all the messages. Which mechanism does Amazon SQS use to allow the consumer to receive a queued message after the consumer is restored? - Answer Pull
How should an administrator recover queued messages from Amazon Simple Queue
Service (Amazon SQS) if the consumer fails? - Answer Pull the queue after the application is restored
An application has the following storage requirements:
Information is stored in multiple tables on a single server.
Master records can be linked to zero or more child records by using shared keys.
The solution must support up to 15 additional replicas. Which solution should be used? - Answer Amazon Aurora
A Linux application needs to use a shared file system. Which solution should be used? - Answer Amazon EFS
A company has data stored on premises and needs to identify a solution that stores snapshots of the local data in AWS. Which solution should be used? - Answer Stored Volume Gateway
How should end-to-end confidentiality be achieved for data stored in an Amazon S3 bucket? - Answer By setting default encryption and a policy to enforce HTTPS connections on the bucket
A client plans to use the internet to copy a large amount of data from an on-premises
Network File System (NFS) store to Amazon S3. Which service will transfer the data in the shortest time? - Answer Amazon Web Services DataSync
A client has an existing on-premises tape backup application and wants to back up the on-premises data directly to Amazon S3 buckets for long-term storage. Which service should be used to transfer on-premises backups to Amazon S3 buckets? - Answer AWS Storage Gateway
An enterprise wants to build an application for selling concert tickets, with a web layer and an application layer. Which Amazon service should be used so ticket orders are not lost if the application layer fails? - Answer SQS
To comply with its disaster recovery requirements, an enterprise is required to store copies of all data in a specific Amazon S3 bucket in an additional Region. How should this requirement be fulfilled? - Answer Enable versioning for the source bucket and configure Cross-Region Replication
An application is deployed in the us-west-1 and eu-west-1 Regions, and the users should be sent to the Region with the fastest response for them, regardless of their location. The solution must minimize administrative effort. Which routing policy should be used? - Answer Latency
A notification is sent to an Amazon SQS queue when an object is uploaded to an Amazon S3 bucket. An Amazon ECS cluster processes messages from the queue. The required queue size fluctuates based on the number of incoming messages and the processing speed. The company needs to design a scaling strategy for auto scaling that will minimize the queue size. Which metric should be used for auto scaling to minimize the queue size? - Answer Amazon SQS messages
A company hosts a website from two EC2 instances. Users access the website through an Elastic Load Balancer (ELB). The company needs to ensure the website is highly available if one or more of the EC2 instances are unavailable. Which solution should this company use? - Answer Configure the ELB to implement Auto Scaling based on health checks
A company plans to migrate a legacy application to EC2 with no modifications to the application. The company hopes to add modern cloud features to immediately respond to changing needs. Which cloud feature will achieve this goal? - Answer Auto scaling
A company plans to migrate a legacy application to EC2 with no modifications to the application. The application has regular seasonal increases in demand, and it must automatically adapt to these needs. Which scaling option should be included in the migration? - Answer Scheduled
A company plans to migrate a legacy application to Amazon EC2 with no modifications to the application. The application constantly changes demands with no patterns, and it must automatically adapt to these needs. Which scaling option should be included in the migration? - Answer Dynamic
A company plans to migrate a legacy application to Amazon EC2 with no modifications to the application. Once the application has completed a trial in the cloud, the company needs to use machine learning algorithms to adapt the WGU-D319 PRE-ASSESSMENT: AWS Cloud Architecture (Already Passed)2023
application to changing demands. Which scaling option should be used? - Answer Predictive
A web application uses a web server with a separate database server. The database
provides results to the web server. Users report long delays in receiving their results.
Logs reveal that the CPU utilization metric for the web server consistently reaches 100%. Performance metrics for the database are nominal. How can the response time be improved? - Answer By scaling the web server layer through the addition of web servers
An administrator is concerned that a consumer may fail and not receive every message immediately. The administrator chooses to use Amazon Simple Queue Service (Amazon SQS) to ensure the consumer will be able to receive all the messages. Which mechanism does Amazon SQS use to allow the consumer to receive a queued message after the consumer is restored? - Answer Pull
How should an administrator recover queued messages from Amazon Simple Queue
Service (Amazon SQS) if the consumer fails? - Answer Pull the queue after the application is restored
An application has the following storage requirements:
Information is stored in multiple tables on a single server.
Master records can be linked to zero or more child records by using shared keys.
The solution must support up to 15 additional replicas. Which solution should be used? - Answer Amazon Aurora
A Linux application needs to use a shared file system. Which solution should be used? - Answer Amazon EFS
A company has data stored on premises and needs to identify a solution that stores snapshots of the local data in AWS. Which solution should be used? - Answer Stored Volume Gateway
How should end-to-end confidentiality be achieved for data stored in an Amazon S3 bucket? - Answer By setting default encryption and a policy to enforce HTTPS connections on the bucket
A client plans to use the internet to copy a large amount of data from an on-premises
Network File System (NFS) store to Amazon S3. Which service will transfer the data in the shortest time? - Answer Amazon Web Services DataSync
A client has an existing on-premises tape backup application and wants to back up the on-premises data directly to Amazon S3 buckets for long-term storage. Which service should be used to transfer on-premises backups to Amazon S3 buckets? - Answer AWS Storage Gateway
