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Amazon DVA-C02 Certification Exam covers a broad range of topics, including AWS core services, databases, application deployment, security, and monitoring. DVA-C02 exam consists of 65 multiple-choice and multiple-response questions that must be completed within 130 minutes. The passing score for DVA-C02 exam is 720 out of 1000, and it is available in multiple languages. Successful completion of this certification exam demonstrates the candidate's ability to develop and deploy scalable, secure, and reliable applications on the AWS platform, making them a valuable asset to any organization that uses AWS.

To earn the AWS Certified Developer - Associate certification, candidates must pass the DVA-C02 Exam. DVA-C02 exam consists of multiple-choice and multiple-response questions that cover various topics, such as AWS core services, AWS databases, AWS security, AWS deployment, and AWS troubleshooting. DVA-C02 exam duration is 130 minutes, and the passing score is 720 out of 1000.

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To prepare for the DVA-C02 Exam, candidates should have experience in developing applications using AWS services and technologies. They should be familiar with AWS SDKs, APIs, and command-line tools and have hands-on experience with AWS services such as Amazon EC2, Amazon S3, Amazon RDS, and Amazon SQS. Candidates can also benefit from taking AWS training courses, reading AWS documentation, and practicing with AWS services in a sandbox environment.

Amazon AWS Certified Developer - Associate Sample Questions (Q525-Q530):

NEW QUESTION # 525
A company's website runs on an Amazon EC2 instance and uses Auto Scaling to scale the environment during peak times. Website users across the world ate experiencing high latency flue lo sialic content on theEC2 instance. even during non-peak hours.
When companion of steps mill resolves the latency issue? (Select TWO)

A. Create an Amazon Cloudfront distribution to cache the static content
B. Store the application's sialic content in Amazon S3
C. Scale vertically by resizing the EC2 instances
D. Host the application code on AWS lambda
E. Double the Auto Scaling group's maximum number of servers

Answer: A,B

Explanation:
Explanation
The combination of steps that will resolve the latency issue is to create an Amazon CloudFront distribution to cache the static content and store the application's static content in Amazon S3. This way, the company can use CloudFront to deliver the static content from edge locations that are closer to the website users, reducing latency and improving performance. The company can also use S3 to store the static content reliably and cost-effectively, and integrate it with CloudFront easily. The other options either do not address the latency issue, or are not necessary or feasible for the given scenario.

NEW QUESTION # 526
An application development team decides to use AWS X-Ray to monitor application code to analyze performance and perform root cause analysis. What does the team need to do to begin using X-Ray? (Choose two.)

A. Instrument application code using the AWS SDK.
B. Log instrumentation output into an Amazon SQS queue.
C. Use a visualization tool to view application traces.
D. Install the X-Ray agent on the application servers.
E. Create an Amazon DynamoDB table to store the trace logs.

Answer: A,D

Explanation:
To use AWS X-Ray, the application code must be instrumented using the AWS SDK or X-Ray SDK so that it can generate trace data for incoming requests. In addition, the X-Ray daemon (agent) must be installed and running on the application servers to collect the trace data and send it to the X-Ray service for analysis.

NEW QUESTION # 527
A company is creating an application that processes csv files from Amazon S3 A developer has created an S3 bucket The developer has also created an AWS Lambda function to process the csv files from the S3 bucket Which combination of steps will invoke the Lambda function when a csv file is uploaded to Amazon S3?
(Select TWO.)

A. Create a new Lambda function to scan the S3 bucket for recently added S3 objects
B. Add S3 Lifecycle rules to invoke the existing Lambda function
C. Add a trigger to the existing Lambda function. Set the trigger type to EventBridge Select the Amazon EventBridge rule.
D. Create an Amazon EventBridge rule Configure the rule with a pattern to match the S3 object created event
E. Schedule an Amazon EventBridge rule to run a new Lambda function to scan the S3 bucket.

Answer: B,D

Explanation:
* Amazon EventBridge: A service that reacts to events from various AWS sources, including S3. Rules define which events trigger actions (like invoking Lambda functions).
* S3 Object Created Events: EventBridge can detect these, providing seamless integration for automated CSV processing.
* S3 Lifecycle Rules: Allow for actions based on object age or prefixes. These can directly trigger Lambda functions for file processing.
References:
Amazon EventBridge Documentation: https://docs.aws.amazon.com/eventbridge/ Working with S3 Event Notifications: https://docs.aws.amazon.com/AmazonS3/latest/userguide
/EventNotifications.html
S3 Lifecycle Configuration: https://docs.aws.amazon.com/AmazonS3/latest/userguide/object-lifecycle-mgmt.
html

NEW QUESTION # 528
A developer is working on a web application that uses Amazon DynamoDB as its data store. The application has two DynamoDB tables: one table that is named artists and one table that is named songs. The artists table has artistName as the partition key. The songs table has songName as the partition key and artistName as the sort key.
The table usage patterns include the retrieval of multiple songs and artists in a single database operation from the webpage. The developer needs a way to retrieve this information with minimal network traffic and optimal application performance.
Which solution will meet these requirements?

A. Create a local secondary index (LSI) on the songs table that uses artistName as the partition key.
Perform a query operation for each artistName on the songs table that filters by the list of songName. Perform a query operation for each artistName on the artists table.
B. Perform a Scan operation on each table that filters by the list of songName/artistName for the songs table and the list of artistName in the artists table.
C. Perform a BatchGetitem operation on the songs table that uses the songName/artistName keys.
Perform a BatchGetltem operation on the artists table that uses artistName as the key.
D. Perform a BatchGetltem operation that returns items from the two tables. Use the list of songName/artistName keys for the songs table and the list of artistName key for the artists table.

Answer: D

Explanation:
BatchGetItem can return one or multiple items from one or more tables.
https://docs.aws.amazon.com/amazondynamodb/latest/APIReference/API_BatchGetItem.html

NEW QUESTION # 529
A company has an application that uses Amazon Cognito user pools as an identity provider. The company must secure access to user records. The company has set up multi-factor authentication (MFA). The company also wants to send a login activity notification by email every time a user logs in.
What is the MOST operationally efficient solution that meets this requirement?

A. Configure Amazon Cognito to stream all logs to Amazon Kinesis Data Firehose. Create an AWS Lambda function to process the streamed logs and to send the email notification based on the login status of each user.
B. Create an AWS Lambda function that uses Amazon Simple Email Service (Amazon SES) to send the email notification. Create an Amazon CloudWatch Logs log subscription filter to invoke the function based on the login status.
C. Create an AWS Lambda function that uses Amazon Simple Email Service (Amazon SES) to send the email notification. Add an Amazon API Gateway API to invoke the function. Call the API from the client side when login confirmation is received.
D. Create an AWS Lambda function that uses Amazon Simple Email Service (Amazon SES) to send the email notification. Add an Amazon Cognito post authentication Lambda trigger for the function.

Answer: D

Explanation:
Explanation
Amazon Cognito user pools support Lambda triggers, which are custom functions that can be executed at various stages of the user pool workflow. A post authentication Lambda trigger can be used to perform custom actions after a user is authenticated, such as sending an email notification. Amazon SES is a cloud-based email sending service that can be used to send transactional or marketing emails. A Lambda function can use the Amazon SES API to send an email to the user's email address after the user logs in successfully.
Reference: Post authentication Lambda trigger

NEW QUESTION # 530
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