AWS Certified Developer - Associate (DVA-C02) Exam notes

Camille Chang · 2025-12-14T02:01:59Z

Notes preparation before the exam. AWS X-Ray X-Ray daemon is a software application that listens for traffic on UDP port 2000, gathers raw segment data, and relays it to the AWS X-Ray API. * Note: * End-of-support notice – On February 25th, 2027, AWS X-Ray will discontinue support for AWS X-Ray SDKs and daemon. https://docs.aws.amazon.com/xray/latest/devguide/xray-daemon.html S3 S3 Object Lambda , provide different views of data to multiple applications, allows you to add custom code to process and transform data retrieved from S3 buckets during standard GET, HEAD, and LIST API requests. This enables applications to access a tailored view of the data without needing to create or maintain separate, derivative copies or manage a proxy layer. https://aws.amazon.com/blogs/aws/introducing-amazon-s3-object-lambda-use-your-code-to-process-data-as-it-is-being-retrieved-from-s3/ DynamoDB supports two different kinds of primary keys: Partition key – A simple primary key, composed of one attribute known as the partition key. Partition key and sort key – Referred to as a composite primary key, this type of key is composed of two attributes. Secondary index Global secondary index – An index with a partition key and sort key that can be different from those on the table. The primary key values in global secondary indexes don't need to be unique. Local secondary index – An index that has the same partition key as the table, but a different sort key. https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/HowItWorks.CoreComponents.html Cloudfront Only support ACM certificate in the US East (N. Virginia) Region (us-east-1). ### Amplify Git-based workflow for hosting full-stack serverless web applications with continuous deployment. LB ALB, layer 7, HTTP/HTTPS X-Forwarded-For, helps you identify the IP address of a client https://docs.aws.amazon.com/elasticloadbalancing/latest/application/x-forwarded-headers.html NLB, layer 4, TCP/UDP Beanstalk Elastic Beanstalk provisions Amazon EC2 instances , configures load balancing, sets up health monitoring, and dynamically scales your environment.

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Notes preparation before the exam.

AWS X-Ray

X-Ray daemonis a software application that listens for traffic on UDP port 2000, gathers raw segment data, and relays it to the AWS X-Ray API.

*Note: * End-of-support notice – On February 25th, 2027, AWS X-Ray will discontinue support for AWS X-Ray SDKs and daemon. https://docs.aws.amazon.com/xray/latest/devguide/xray-daemon.html

S3

S3 Object Lambda, provide different views of data to multiple applications, allows you to add custom code to process and transform data retrieved from S3 buckets during standard GET, HEAD, and LIST API requests. This enables applications to access a tailored view of the data without needing to create or maintain separate, derivative copies or manage a proxy layer. https://aws.amazon.com/blogs/aws/introducing-amazon-s3-object-lambda-use-your-code-to-process-data-as-it-is-being-retrieved-from-s3/

DynamoDB

supports two different kinds of primary keys:
- Partition key – A simple primary key, composed of one attribute known as the partition key.
- Partition key and sort key – Referred to as a composite primary key, this type of key is composed of two attributes.
Secondary index
- Global secondary index – An index with a partition key and sort key that can be different from those on the table. The primary key values in global secondary indexes don't need to be unique.
- Local secondary index – An index that has the same partition key as the table, but a different sort key.

https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/HowItWorks.CoreComponents.html

Cloudfront

Only support ACM certificate in the US East (N. Virginia) Region (us-east-1). ### Amplify
Git-based workflow for hosting full-stack serverless web applications with continuous deployment.