AWS DVA-C02 Certified Developer - Associate
Certification Exam 2026 Guide
1. A developer builds an application that uses the AWS Create a new IAM policy
SDK for Python (Boto3) to query an Amazon Dy- with the necessary Ama-
namoDB table. When the application is tested on an zon DynamoDB permis-
Amazon EC2 instance, the application returns this er- sions. Attach this IAM role
ror message: as an additional role on
the EC2 instance.
"An error occurred (AccessDenied) when calling the
operation"
The EC2 instance is associated with an existing IAM
role named myRole
Which set of actions would resolve this error? (AWS)
2. A company notices performance degradation in one AWS X=Ray service map
of its production web applications. The application is
running on AWS services and uses a microservices
architecture. The company suspects that one of these
microservices is causing the performance issue.
Which AWS solution should the company use to identi-
fy the service that is contributing to higher application
latency? (AWS)
3. A developer migrates a web application from an Store session state infor-
on-premises data center to the AWS Cloud. Authenti- mation in an Amazon Elas-
cated customers use the application from many differ- tiCache for Redis cluster.
ent clients simultaneously, including laptops, smart-
phones, and tablets. The application runs on Amazon
EC2 instances behind an Application Load Balancer.
The instances run in an Amazon EC2 Auto Scaling
group. Upon initial testing, users report that when
switching devices, activity from their previous ses-
, AWS DVA-C02 Certified Developer - Associate
Certification Exam 2026 Guide
sions is not saved.
Which solution will make the session state informa-
tion persist across devices? (AWS)
4. A company is working on a project to enhance its Create a new Lambda ver-
serverless application development process. The com- sion every time a new code
pany hosts applications on AWS Lambda. The devel- release needs testing
opment team regularly updates the Lambda code and
wants to use stable code in production. And
Which combination of steps should the development Create two Lambda func-
team take to configure Lambda functions to meet tion aliases. Name one as
both development and production requirements? (Se- production and the oth-
lect TWO.) (AWS) er as Development. Point
the Production alias to
a production-ready qual-
ified Amazon Resource
Name (ARN) version. Point
the Development alias to
the $LATEST version.
5. A developer builds an inventory application that runs CreateActivity, GetActivi-
on employee tablets. The tablet application serves as tyTaask, SendTaskHeart-
an activity worker for an AWS Step Functions state Beat, SendTaskFailure,
machine. The application must retrieve a scheduled SentTaskSuccess
task, periodically report on task progress, and report
task completion or task failure.
Which Step Functions API actions does the tablet ap-
plication need to make? (AWS)
6.
, AWS DVA-C02 Certified Developer - Associate
Certification Exam 2026 Guide
A developer configures AWS CodeDeploy to install an In the root of the directo-
application on Amazon EC2 instances in an Amazon ry structure of the applica-
EC2 Auto Scaling group. tion's source code
Where should the developer place the appspec.yml
file? (AWS)
7. Which of the following is not a storage class of S3? S3 Standard frequent Ac-
(Whizlabs) cess
8. Which metadata attribute in Amazon S3 provides in- Content-Length
formation about the object's size in bytes? (Whizlabs)
9. How can you permanently delete a specific version of Use the DELETE command
an object in an S3 bucket with versioning enabled? with the specific version ID
(Whizlabs) of the object
10. Which access control mechanism in Amazon S3 allows Access Control Lists (ACLs)
setting permissions on individual objects and sup-
ports granting permissions to predefined groups or
specific AWS accounts? (Whizlabs)
11. What feature of Amazon S3 allows the automatic tran- S3 Object Lifecycle Policies
sition of objects between storage classes based on
specified rules? (Whizlabs)
12. Which of the following is NOT a prerequisite for en- versioning must be en-
abling Cross-Region Replication in Amazon S3? (Whi- abled on the source buck-
zlabs) et
13. Which Amazon S3 storage class is designed for fre- S3 Standard
quently accessed data with millisecond latency and
high throughput? (Whizlabs)
, AWS DVA-C02 Certified Developer - Associate
Certification Exam 2026 Guide
14. Which Amazon S3 storage class offers the same high S3 One zone-IA
durability as S3 Standard but stores data in a single
availability zone to reduce costs? (Whizlabs)
15. Which Amazon S3 storage class offers automatic data S3 Intelligent-Tiering
archiving based on long-term access patterns while
optimizing costs? (Whizlabs)
16. Which Amazon S3 storage class provides the lowest S3 Glacier
storage cost among all the classes, primarily intended
for data archiving?
17. Which Amazon S3 Glacier storage class is designed for Glacier Standard
data that is infrequently accessed, where a retrieval
time of several hours is acceptable? (Whizlabs)
18. Which factor primarily differentiates Amazon S3 Glac- Data Retrieval
ier storage classes from one another? (Whizlabs)
19. Which AWS service allows you to host static websites Amazon S3
easily and cost-effectively without managing infra-
structure? (Whizlabs)
20. Which is the default endpoint format for an Amazon http://buck-
S3 bucket configured for static website hosting? (Whi- et-name.s3-website-re-
zlabs) gion.amazonaws.com
21. Which AWS service can be used in conjunction with Amazon Route 53
Amazon S3 to enable custom domain names for a
static website? (Whizlabs)
22. Which feature of Amazon EC2 allows users to scale Auto Scaling Groups
compute resources automatically based on demand?
(Whizlabs)
Certification Exam 2026 Guide
1. A developer builds an application that uses the AWS Create a new IAM policy
SDK for Python (Boto3) to query an Amazon Dy- with the necessary Ama-
namoDB table. When the application is tested on an zon DynamoDB permis-
Amazon EC2 instance, the application returns this er- sions. Attach this IAM role
ror message: as an additional role on
the EC2 instance.
"An error occurred (AccessDenied) when calling the
operation"
The EC2 instance is associated with an existing IAM
role named myRole
Which set of actions would resolve this error? (AWS)
2. A company notices performance degradation in one AWS X=Ray service map
of its production web applications. The application is
running on AWS services and uses a microservices
architecture. The company suspects that one of these
microservices is causing the performance issue.
Which AWS solution should the company use to identi-
fy the service that is contributing to higher application
latency? (AWS)
3. A developer migrates a web application from an Store session state infor-
on-premises data center to the AWS Cloud. Authenti- mation in an Amazon Elas-
cated customers use the application from many differ- tiCache for Redis cluster.
ent clients simultaneously, including laptops, smart-
phones, and tablets. The application runs on Amazon
EC2 instances behind an Application Load Balancer.
The instances run in an Amazon EC2 Auto Scaling
group. Upon initial testing, users report that when
switching devices, activity from their previous ses-
, AWS DVA-C02 Certified Developer - Associate
Certification Exam 2026 Guide
sions is not saved.
Which solution will make the session state informa-
tion persist across devices? (AWS)
4. A company is working on a project to enhance its Create a new Lambda ver-
serverless application development process. The com- sion every time a new code
pany hosts applications on AWS Lambda. The devel- release needs testing
opment team regularly updates the Lambda code and
wants to use stable code in production. And
Which combination of steps should the development Create two Lambda func-
team take to configure Lambda functions to meet tion aliases. Name one as
both development and production requirements? (Se- production and the oth-
lect TWO.) (AWS) er as Development. Point
the Production alias to
a production-ready qual-
ified Amazon Resource
Name (ARN) version. Point
the Development alias to
the $LATEST version.
5. A developer builds an inventory application that runs CreateActivity, GetActivi-
on employee tablets. The tablet application serves as tyTaask, SendTaskHeart-
an activity worker for an AWS Step Functions state Beat, SendTaskFailure,
machine. The application must retrieve a scheduled SentTaskSuccess
task, periodically report on task progress, and report
task completion or task failure.
Which Step Functions API actions does the tablet ap-
plication need to make? (AWS)
6.
, AWS DVA-C02 Certified Developer - Associate
Certification Exam 2026 Guide
A developer configures AWS CodeDeploy to install an In the root of the directo-
application on Amazon EC2 instances in an Amazon ry structure of the applica-
EC2 Auto Scaling group. tion's source code
Where should the developer place the appspec.yml
file? (AWS)
7. Which of the following is not a storage class of S3? S3 Standard frequent Ac-
(Whizlabs) cess
8. Which metadata attribute in Amazon S3 provides in- Content-Length
formation about the object's size in bytes? (Whizlabs)
9. How can you permanently delete a specific version of Use the DELETE command
an object in an S3 bucket with versioning enabled? with the specific version ID
(Whizlabs) of the object
10. Which access control mechanism in Amazon S3 allows Access Control Lists (ACLs)
setting permissions on individual objects and sup-
ports granting permissions to predefined groups or
specific AWS accounts? (Whizlabs)
11. What feature of Amazon S3 allows the automatic tran- S3 Object Lifecycle Policies
sition of objects between storage classes based on
specified rules? (Whizlabs)
12. Which of the following is NOT a prerequisite for en- versioning must be en-
abling Cross-Region Replication in Amazon S3? (Whi- abled on the source buck-
zlabs) et
13. Which Amazon S3 storage class is designed for fre- S3 Standard
quently accessed data with millisecond latency and
high throughput? (Whizlabs)
, AWS DVA-C02 Certified Developer - Associate
Certification Exam 2026 Guide
14. Which Amazon S3 storage class offers the same high S3 One zone-IA
durability as S3 Standard but stores data in a single
availability zone to reduce costs? (Whizlabs)
15. Which Amazon S3 storage class offers automatic data S3 Intelligent-Tiering
archiving based on long-term access patterns while
optimizing costs? (Whizlabs)
16. Which Amazon S3 storage class provides the lowest S3 Glacier
storage cost among all the classes, primarily intended
for data archiving?
17. Which Amazon S3 Glacier storage class is designed for Glacier Standard
data that is infrequently accessed, where a retrieval
time of several hours is acceptable? (Whizlabs)
18. Which factor primarily differentiates Amazon S3 Glac- Data Retrieval
ier storage classes from one another? (Whizlabs)
19. Which AWS service allows you to host static websites Amazon S3
easily and cost-effectively without managing infra-
structure? (Whizlabs)
20. Which is the default endpoint format for an Amazon http://buck-
S3 bucket configured for static website hosting? (Whi- et-name.s3-website-re-
zlabs) gion.amazonaws.com
21. Which AWS service can be used in conjunction with Amazon Route 53
Amazon S3 to enable custom domain names for a
static website? (Whizlabs)
22. Which feature of Amazon EC2 allows users to scale Auto Scaling Groups
compute resources automatically based on demand?
(Whizlabs)
