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| Certification Vendor: | Amazon Web Services (AWS) |
|---|---|
| Exam Name: | AWS Certified Developer – Associate (DVA-C02) |
| Exam Number: | DVA-C02 |
| Available Languages: | Japanese, Portuguese (Brazil), Spanish (Latin America), English, Traditional Chinese, German, French, Simplified Chinese, Korean |
| Certificate Validity Period: | 3 years |
| Exam Price: | USD 150 |
| Passing Score: | 720 (scaled score) |
| Real Exam Qty: | 65 |
| Exam Format: | Multiple choice, Multiple response |
| Exam Duration: | 130 minutes |
| Related Certifications: | AWS Certified Cloud Practitioner AWS Certified DevOps Engineer – Professional AWS Certified Solutions Architect – Associate |
| Recommended Training: | AWS Certified Developer – Associate Exam Guide AWS Skill Builder – Developer Learning Plan |
| Exam Registration: | Pearson VUE AWS Exams AWS Certification Official Registration |
| Sample Questions: | Amazon DVA-C02 Sample Questions |
| Exam Way: | Online proctored exam via Pearson VUE or in-person at authorized testing centers |
| Pre Condition: | No mandatory prerequisites. Recommended: 1+ year of hands-on experience developing and maintaining AWS-based applications. |
| Official Syllabus URL: | https://aws.amazon.com/certification/certified-developer-associate/ |
The Amazon DVA-C02 pdf format of the UpdateDumps product is easy-to-use. It contains actual AWS Certified Developer - Associate (DVA-C02) exam questions. You can easily download and use DVA-C02 pdf on laptops, tablets, and smartphones. UpdateDumps regularly updates Amazon DVA-C02 Exam Questions' pdf version so that you always have the latest material. Furthermore, the Amazon DVA-C02 pdf can be printed enabling paper study.
To prepare for the Amazon DVA-C02 certification exam, candidates can take various courses and training programs offered by AWS. They can also use online resources such as practice exams, study guides, and whitepapers to help them prepare for the exam. DVA-C02 Exam consists of multiple-choice questions and is available in multiple languages.
NEW QUESTION # 647
A developer is designing a serverless application that customers use to select seats for a concert venue. Customers send the ticket requests to an Amazon API Gateway API with an AWS Lambda function that acknowledges the order and generates an order ID. The application includes two additional Lambda functions: one for inventory management and one for payment processing. These two Lambda functions run in parallel and write the order to an Amazon Dynamo DB table.
The application must provide seats to customers according to the following requirements. If a seat is accidently sold more than once, the first order that the application received must get the seat. In these cases, the application must process the payment for only the first order. However, if the first order is rejected during payment processing, the second order must get the seat. In these cases, the application must process the payment for the second order.
Which solution will meet these requirements?
Answer: C
NEW QUESTION # 648
A company has deployed infrastructure on AWS. A development team wants to create an AWS Lambda function that will retrieve data from an Amazon Aurora database. The Amazon Aurora database is in a private subnet in company's VPC. The VPC is named VPC1. The data is relational in nature. The Lambda function needs to access the data securely.
Which solution will meet these requirements?
Answer: C
Explanation:
AWS Lambda is a service that lets you run code without provisioning or managing servers. Lambda functions can be configured to access resources in a VPC, such as an Aurora database, by specifying one or more subnets and security groups in the VPC settings of the function. A security group acts as a virtual firewall that controls inbound and outbound traffic for the resources in a VPC. To allow a Lambda function to communicate with an Aurora database, both resources need to be associated with the same security group, and the security group rules need to allow TCP traffic on Port 3306, which is the default port for MySQL databases. Reference: [Configuring a Lambda function to access resources in a VPC]
NEW QUESTION # 649
A developer has written an AWS Lambda function. The function is CPU-bound. The developer wants to ensure that the function returns responses quickly. How can the developer improve the function's performance?
Answer: B
Explanation:
Adding more memory proportionally increases the amount of CPU, increasing the overall computational power available. If a function is CPU-, network- or memory-bound, then changing the memory setting can dramatically improve its performance.
https://docs.aws.amazon.com/lambda/latest/operatorguide/computing-power.html
https://docs.aws.amazon.com/lambda/latest/dg/configuration-function-
common.html#configuration-memory-console
NEW QUESTION # 650
A developer has created a data collection application that uses Amazon API Gateway, AWS Lambda, and Amazon S3. The application's users periodically upload data files and wait for the validation status to be reflected on a processing dashboard. The validation process is complex and time-consuming for large files.
Some users are uploading dozens of large files and have to wait and refresh the processing dashboard to see if the files have been validated. The developer must refactor the application to immediately update the validation result on the user's dashboard without reloading the full dashboard.
What is the MOST operationally efficient solution that meets these requirements?
Answer: B
Explanation:
The requirement is real-time UI updates "immediately" without refreshing the dashboard. The most operationally efficient AWS-native method is to use API Gateway WebSocket APIs to push updates from the backend to the browser.
With option A, the client establishes a WebSocket connection and receives a connection ID. The application can associate uploads (or job IDs) with that connection ID (commonly storing the mapping in DynamoDB or another datastore). When the long-running validation finishes, the backend uses the WebSocket management API to post a message to the specific connection ID, and the browser updates the UI dynamically. This eliminates polling/refresh and scales well without managing servers.
Option B requires running and maintaining an EC2-hosted WebSocket server (patching, scaling, uptime), which is more operational overhead.
Option C uses email, which is not immediate UI updating and doesn't update the dashboard without user action.
Option D is not appropriate: SNS does not directly push notifications to a web browser in a standard way, and it adds unnecessary complexity.
Therefore, using API Gateway WebSocket to push validation results to connected clients is the most operationally efficient solution.
NEW QUESTION # 651
A developer creates an AWS Lambda function to publish a message to an Amazon SNS topic. All message content must be encrypted in transit and at rest between Lambda and Amazon SNS. A part of the Lambda execution role is as follows:
" Effect " : " Allow " , " Action " : " SNS:Publish " , " Resource " : " arn:aws:sns:us-east-1:1234567890:
secure-topic "
Which combination of steps should the developer take to meet these requirements? (Select TWO.)
Answer: C,E
Explanation:
To meet the requirement for encryption " at rest, " you must enable Server-Side Encryption (SSE) on the SNS topic (Option A). To ensure encryption " in transit, " you must enforce HTTPS. The aws:SecureTransport global condition key checks if the request was made over SSL/TLS. Adding a Deny statement where aws:
SecureTransport is false (Option E) effectively mandates that only encrypted connections are allowed to publish to the topic.
NEW QUESTION # 652
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