WGU D319 (ITCL 3201) AWS Cloud
Architecture OA EXAM STUDY GUIDE
2026/2027 COMPLETE QUESTIONS WITH
VERIFIED CORRECT ANSWERS ||
100% GUARANTEED PASS
<NEWEST VERSION>
1. AWS Architecture Frame Work Pillars - ANSWER ✔ 1. Security
Reliability
Performance Efficiency
Cost Optimization
Operational Excellence
2. Security Pillar Overview - ANSWER ✔ -Identity and access management
-Detective controls
-Infrastructure protection
-Data protection
-Incident response
3. Security Design Principles - ANSWER ✔ -Implement security at all layers
-Enable traceability
-Apply principle of least privilege
-Focus on securing your system
-Automate
4. Reliability Pillar Overview - ANSWER ✔ -Recover from issues/failures
-Apply best practices in foundation, change management, failure
management
, -anticipate, respond, and prevent failures
5. Reliability Design Principles - ANSWER ✔ -Test recovery procedures
-Automatically recover
-Scale horizontally
-Stop guessing capacity
-Manage change in automation
6. Performance Efficiency Overview - ANSWER ✔ -Select customizable
solutions
7. Objects are [A] while buckets have [B] - ANSWER ✔ A - strongly
consistent B - eventual consistency
8. Data is persistent in an instance store if it is... - ANSWER ✔ Rebooted
9. EBS SSD use case - ANSWER ✔ IOPS
10.EBS HDD backed - ANSWER ✔ Throughput
11.What type of encryption is used when transferring files from a computer to
AWS? - ANSWER ✔ Client-side encryption
12.Temporary instances that last for 1 to 6 hours - ANSWER ✔ Spot blocks
13.What type of placement group can be launched in one request? - ANSWER
✔ Cluster groups
,14.AWS Relational Databases - ANSWER ✔ RDS, Aurora, and Redshift
15.AWS non-relational databases - ANSWER ✔ DynamoDB, ElastiCache,
Neptune
16.What does Amazon RDS use for data in transit? - ANSWER ✔ SSL (Secure
Socket Layer)
17.Amazon DynamoDB - ANSWER ✔ Consider client side encryption,
encryption in transit, and at rest are enabled by default.
18.Interface Endpoint - ANSWER ✔ An elastic network interface with a
private IP address that serves as an entry point for traffic destined to a
supported service. Examples include Amazon CloudWatch, Amazon EC2
API, and Elastic Loud Balancing. Powered by AWS PrivateLink.
19.Gateway Endpoint - ANSWER ✔ A gateway that you specify as a target for
a route in your route table for traffic destined to a supported AWS service.
Supported AWS services are Amazon S3 and Amazon DynamoDB.
20.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
21.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
, 22.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
23.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
24.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
25.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
26.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
Architecture OA EXAM STUDY GUIDE
2026/2027 COMPLETE QUESTIONS WITH
VERIFIED CORRECT ANSWERS ||
100% GUARANTEED PASS
<NEWEST VERSION>
1. AWS Architecture Frame Work Pillars - ANSWER ✔ 1. Security
Reliability
Performance Efficiency
Cost Optimization
Operational Excellence
2. Security Pillar Overview - ANSWER ✔ -Identity and access management
-Detective controls
-Infrastructure protection
-Data protection
-Incident response
3. Security Design Principles - ANSWER ✔ -Implement security at all layers
-Enable traceability
-Apply principle of least privilege
-Focus on securing your system
-Automate
4. Reliability Pillar Overview - ANSWER ✔ -Recover from issues/failures
-Apply best practices in foundation, change management, failure
management
, -anticipate, respond, and prevent failures
5. Reliability Design Principles - ANSWER ✔ -Test recovery procedures
-Automatically recover
-Scale horizontally
-Stop guessing capacity
-Manage change in automation
6. Performance Efficiency Overview - ANSWER ✔ -Select customizable
solutions
7. Objects are [A] while buckets have [B] - ANSWER ✔ A - strongly
consistent B - eventual consistency
8. Data is persistent in an instance store if it is... - ANSWER ✔ Rebooted
9. EBS SSD use case - ANSWER ✔ IOPS
10.EBS HDD backed - ANSWER ✔ Throughput
11.What type of encryption is used when transferring files from a computer to
AWS? - ANSWER ✔ Client-side encryption
12.Temporary instances that last for 1 to 6 hours - ANSWER ✔ Spot blocks
13.What type of placement group can be launched in one request? - ANSWER
✔ Cluster groups
,14.AWS Relational Databases - ANSWER ✔ RDS, Aurora, and Redshift
15.AWS non-relational databases - ANSWER ✔ DynamoDB, ElastiCache,
Neptune
16.What does Amazon RDS use for data in transit? - ANSWER ✔ SSL (Secure
Socket Layer)
17.Amazon DynamoDB - ANSWER ✔ Consider client side encryption,
encryption in transit, and at rest are enabled by default.
18.Interface Endpoint - ANSWER ✔ An elastic network interface with a
private IP address that serves as an entry point for traffic destined to a
supported service. Examples include Amazon CloudWatch, Amazon EC2
API, and Elastic Loud Balancing. Powered by AWS PrivateLink.
19.Gateway Endpoint - ANSWER ✔ A gateway that you specify as a target for
a route in your route table for traffic destined to a supported AWS service.
Supported AWS services are Amazon S3 and Amazon DynamoDB.
20.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
21.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
, 22.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
23.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
24.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
25.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
26.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
