DVA-C02 PDF題庫 -新版DVA-C02考古題

順便提一下，可以從雲存儲中下載VCESoft DVA-C02考試題庫的完整版：https://drive.google.com/open?id=1g0WDYSL0kVVBYE-eLwCOUEblkJszz1T0

VCESoft是一個專門提供IT認證考試資料的網站，它的考試資料通過率達到100%，這也是大多數考生願意相信VCESoft網站的原因之一，VCESoft網站一直很關注廣大考生的需求，以最大的能力在滿足考生們的需要，VCESoft Amazon的DVA-C02考試培訓資料是一個空前絕後的IT認證培訓資料，有了它，你將來的的職業生涯將風雨無阻。

Amazon DVA-C02 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Troubleshooting and Optimization18%- Debug and resolve errors
  • 1. Identify and fix code defects
  • 2. Resolve integration and configuration problems
- Troubleshoot application issues
  • 1. Analyze logs, metrics, and traces
  • 2. Use Amazon CloudWatch, AWS X-Ray for monitoring
- Optimize application performance
  • 1. Optimize resource usage and costs
  • 2. Improve latency and throughput
Topic 2: Development with AWS Services32%- Write code for applications hosted on AWS
  • 1. Implement architectural patterns
  • 2. Use AWS SDKs and APIs
  • 3. Develop serverless applications
- Interact with AWS data services
  • 1. Implement caching and data storage strategies
  • 2. Work with Amazon DynamoDB, Amazon S3
- Integrate AWS services into applications
  • 1. Use AWS Lambda, API Gateway, Amazon EventBridge
  • 2. Implement messaging and event-driven workflows
Topic 3: Security26%- Apply security best practices
  • 1. Validate application security configurations
  • 2. Follow AWS Well-Architected Framework security principles
- Secure application data
  • 1. Implement encryption at rest and in transit
  • 2. Manage secrets and credentials securely
- Implement authentication and authorization
  • 1. Manage IAM roles, policies, and permissions
  • 2. Use Amazon Cognito for identity management
Topic 4: Deployment24%- Prepare application artifacts for deployment
  • 1. Use infrastructure as code (AWS CloudFormation, AWS SAM)
  • 2. Package code and dependencies
- Implement CI/CD pipelines
  • 1. Use AWS CodePipeline, CodeBuild, CodeDeploy
  • 2. Automate deployment and testing workflows
- Deploy applications on AWS
  • 1. Deploy to AWS Lambda, Amazon EC2, Elastic Beanstalk
  • 2. Perform safe updates and rollbacks

>> DVA-C02 PDF題庫 <<

有用的DVA-C02 PDF題庫和資格考試的領導者與實踐的Amazon AWS Certified Developer - Associate

VCESoft是唯一一個能為你提供品質最好，更新速度最快的Amazon DVA-C02 認證考試的資料網站。或許其他網站也提供Amazon DVA-C02 認證考試的相關資料，但如果你相互比較你就會發現VCESoft提供的資料是最全面，品質最高的，而且其他網站的大部分資料主要來源於VCESoft。

最新的 AWS Certified Associate DVA-C02 免費考試真題 (Q426-Q431):

問題 #426
A company's developer has deployed an application in AWS by using AWS CloudFormation The CloudFormation stack includes parameters in AWS Systems Manager Parameter Store that the application uses as configuration settings. The application can modify the parameter values When the developer updated the stack to create additional resources with tags, the developer noted that the parameter values were reset and that the values ignored the latest changes made by the application. The developer needs to change the way the company deploys the CloudFormation stack. The developer also needs to avoid resetting the parameter values outside the stack.
Which solution will meet these requirements with the LEAST development effort?

答案：A

解題說明：
Explanation
https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/protect-stack-resources.html#stack-policy-


問題 #427
A company has deployed an application on AWS Elastic Beanstalk. The company has configured the Auto Scaling group that is associated with the Elastic Beanstalk environment to have five Amazon EC2 instances. If the capacity is fewer than four EC2 instances during the deployment, application performance degrades. The company is using the all-at-once deployment policy.
What is the MOST cost-effective way to solve the deployment issue?

答案：C

解題說明：
This solution will solve the deployment issue by deploying the new version of the application to one new EC2 instance at a time, while keeping the old version running on the existing instances. This way, there will always be at least four instances serving traffic during the deployment, and no downtime or performance degradation will occur. Option A is not optimal because it will increase the cost of running the Elastic Beanstalk environment without solving the deployment issue. Option B is not optimal because it will split the traffic between two versions of the application, which may cause inconsistency and confusion for the customers. Option D is not optimal because it will deploy the new version of the application to two existing instances at a time, which may reduce the capacity below four instances during the deployment.


問題 #428
A developer is working on an ecommerce application that stores data in an Amazon RDS for MySQL cluster. The developer needs to implement a caching layer for the application to retrieve information about the most viewed products.
Which solution will meet these requirements?

答案：A


問題 #429
A developer is re-architecting a caching solution that currently uses an Amazon ElastiCache (Redis OSS) cluster that has cluster mode enabled to store product information. The existing solution experiences significant load. All cached product data expires at the same time, which results in additional pressure on the backend database and poor performance for end users. The developer must resolve the performance issues in a way that maintains data freshness.
Which solution will meet these requirements?

答案：D

解題說明：
The described behavior is a classic cache stampede (also called the "thundering herd" problem): a large set of hot keys share the same expiration time, so they all expire simultaneously. When that happens, many requests miss the cache at the same moment and fall back to the backend database, creating a sudden spike in database load and causing increased latency and poor user experience.
The most effective fix that preserves freshness is to introduce jitter-a small, randomized variance-into the TTL values so cached objects do not all expire at the same time. With TTL jitter, each item still has a bounded lifetime (so freshness is maintained), but expirations become spread out over time. That smooths cache-miss rates and prevents synchronized regeneration, reducing bursts of database traffic. This is a common best practice in high-load caching systems precisely to avoid mass expiration events.
Option A (increase TTL) might reduce how frequently a stampede occurs, but it does not solve the root cause:
keys can still align and expire together, and a longer TTL can also reduce freshness if product data changes.
Option B (more replicas, disable cluster mode) changes topology and read scaling, but it does not prevent synchronized expiry or the resulting backend spike; disabling cluster mode could also reduce scale for large keyspaces. Option D (more shards) can improve cache throughput capacity, but it does not address the core issue that backend load spikes occur when items expire simultaneously; lowering replica count could even reduce read availability.
Therefore, C is the correct solution: keep TTL-based freshness, but add a randomized component (for example, TTL = baseTTL + random(0..jitter)) so expirations are distributed and the backend database is protected from sudden bursts.


問題 #430
A developer created reusable code that several AWS Lambda functions need to use. The developer bundled the code into a zip archive. The developer needs to deploy the code to AWS and update the Lambda functions to use the code.
Which solution will meet this requirement in the MOST operationally efficient way?

答案：C


問題 #431
......

VCESoft是個能夠加速你通過Amazon DVA-C02認證考試的網站。我們的Amazon DVA-C02 認證考試的考古題是VCESoft的專家不斷研究出來的。當你還在為通過Amazon DVA-C02 認證考試而奮鬥時，選擇VCESoft的Amazon DVA-C02 認證考試的最新考古題將給你的復習備考帶來很大的幫助。

新版DVA-C02考古題: https://www.vcesoft.com/DVA-C02-pdf.html

P.S. VCESoft在Google Drive上分享了免費的、最新的DVA-C02考試題庫：https://drive.google.com/open?id=1g0WDYSL0kVVBYE-eLwCOUEblkJszz1T0