PRE-ASSESSMENT: AWS Cloud
Architecture - D319 ACTUAL
QUESTIONS AND CORRECT ANSWERS
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? - CORRECT ANSWERS✅✅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? - CORRECT ANSWERS✅✅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? -
CORRECT ANSWERS✅✅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? - CORRECT
ANSWERS✅✅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? -
CORRECT ANSWERS✅✅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? - CORRECT
ANSWERS✅✅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? - CORRECT ANSWERS✅✅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? - CORRECT ANSWERS✅✅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 application to changing demands. Which
scaling option should be used? - CORRECT ANSWERS✅✅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? - CORRECT
ANSWERS✅✅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? - CORRECT ANSWERS✅✅Pull
How should an administrator recover queued messages from Amazon Simple Queue Service
(Amazon SQS) if the consumer fails? - CORRECT ANSWERS✅✅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? - CORRECT ANSWERS✅✅Amazon Aurora
Architecture - D319 ACTUAL
QUESTIONS AND CORRECT ANSWERS
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? - CORRECT ANSWERS✅✅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? - CORRECT ANSWERS✅✅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? -
CORRECT ANSWERS✅✅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? - CORRECT
ANSWERS✅✅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? -
CORRECT ANSWERS✅✅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? - CORRECT
ANSWERS✅✅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? - CORRECT ANSWERS✅✅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? - CORRECT ANSWERS✅✅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 application to changing demands. Which
scaling option should be used? - CORRECT ANSWERS✅✅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? - CORRECT
ANSWERS✅✅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? - CORRECT ANSWERS✅✅Pull
How should an administrator recover queued messages from Amazon Simple Queue Service
(Amazon SQS) if the consumer fails? - CORRECT ANSWERS✅✅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? - CORRECT ANSWERS✅✅Amazon Aurora
