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Amazon DVA-C02 (AWS Certified Developer - Associate) Certification Exam is a professional certification offered by Amazon Web Services (AWS) to developers who want to demonstrate their expertise in designing, developing, and deploying cloud-based applications on the AWS platform. AWS Certified Developer - Associate certification is designed for individuals who have a minimum of one year of experience in developing and maintaining AWS-based applications.

The DVA-C02 certification is valuable for developers who want to demonstrate their proficiency in AWS development and increase their job prospects. It can also help developers earn higher salaries and gain recognition as experts in the field. Overall, the DVA-C02 certification is an excellent opportunity for developers to validate their skills in AWS development and advance their careers.

Amazon DVA-C02 certification exam covers a wide range of topics related to AWS services, including compute, storage, database, networking, security, and deployment. DVA-C02 exam consists of multiple-choice questions and is designed to test the candidate's understanding of AWS services, best practices, and architectural patterns.

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Amazon AWS Certified Developer - Associate Sample Questions (Q190-Q195):

NEW QUESTION # 190
A developer is testing a RESTful application that is deployed by using Amazon API Gateway and AWS Lambda When the developer tests the user login by using credentials that are not valid, the developer receives an HTTP 405 METHOD_NOT_ALLOWED error The developer has verified that the test is sending the correct request for the resource Which HTTP error should the application return in response to the request?

A. HTTP 401
B. HTTP 503
C. HTTP 404
D. HTTP 505

Answer: A

Explanation:
Explanation
The HTTP 401 error indicates that the request has not been applied because it lacks valid authentication credentials for the target resource. This is the appropriate error code to return when the user login fails due to invalid credentials. The HTTP 405 error means that the method specified in the request is not allowed for the resource identified by the request URI, which is not the case here. The other error codes are not relevant to the authentication failure scenario. References
* HTTP Status Codes
* AWS Lambda Function Errors in API Gateway

NEW QUESTION # 191
A company is migrating legacy internal applications to AWS. Leadership wants to rewrite the internal employee directory to use native AWS services. A developer needs to create a solution for storing employee contact details and high-resolution photos for use with the new application.
Which solution will enable the search and retrieval of each employee's individual details and high- resolution photos using AWS APIs?

A. Store each employee's contact information in an Amazon DynamoDB table along with the object keys for the photos stored in Amazon S3.
B. Encode each employee's contact information and photos using Base64. Store the information in an Amazon DynamoDB table using a sort key.
C. Use Amazon Cognito user pools to implement the employee directory in a fully managed software-as-a-service (SaaS) method.
D. Store employee contact information in an Amazon RDS DB instance with the photos stored in Amazon Elastic File System (Amazon EFS).

Answer: A

Explanation:
Cognito is also an attractive option here but the problem is it doesn't have a built-in feature for photos and we would need S3.

NEW QUESTION # 192
A developer is creating an AWS Lambda function that searches for items from an Amazon DynamoDB table that contains customer contact information- The DynamoDB table items have the customer's email_address as the partition key and additional properties such as customer_type, name, and job_tltle.
The Lambda function runs whenever a user types a new character into the customer_type text input The developer wants the search to return partial matches of all the email_address property of a particular customer_type The developer does not want to recreate the DynamoDB table.
What should the developer do to meet these requirements?

A. Add a local secondary index (LSI) to the DynamoDB table With customer_type as the partition key and email_address as the sort key Perform a query operation on the LSI by using the begins_wlth key condition expression With the email_address property
B. Add a local secondary Index (LSI) to the DynamoDB table With job_tltle as the partition key and emad_address as the sort key Perform a query operation on the LSI by using the begins_wrth key condition expression With the email_address property
C. Add a global secondary index (GSI) to the DynamoDB table With ernail_address as the partition key and customer_type as the sort key Perform a query operation on the GSI by using the begins_wtth key condition expression With the email_address property.
D. Add a global secondary index (GSI) to the DynamoDB table with customer_type as the partition key and email_address as the sort key Perform a query operation on the GSI by using the begvns_wth key condition expression With the email_address property

Answer: D

Explanation:
Explanation
By adding a global secondary index (GSI) to the DynamoDB table with customer_type as the partition key and email_address as the sort key, the developer can perform a query operation on the GSI using the Begins_with key condition expression with the email_address property. This will return partial matches of all email_address properties of a specific customer_type.

NEW QUESTION # 193
A developer deployed an application to an Amazon EC2 instance The application needs to know the public IPv4 address of the instance How can the application find this information?

A. Check the hosts file of the operating system
B. Query
the Amazon Machine Image (AMI) information from http://169.254.169.254/latest/meta-data/ami/.
C. Query the instance user data from http '169 254.169 254. latest/user-data/
D. Query the instance metadata from http./M69.254.169.254. latestmeta-data/.

Answer: D

Explanation:
Explanation
The
instance metadata service provides information about the EC2 instance, including the public IPv4 address, which can be obtained by querying the endpoint http://169.254.169.254/latest/meta-data/public-ipv4.
References
* Instance metadata and user data
* Get Public IP Address on current EC2 Instance
* Get the public ip address of your EC2 instance quickly

NEW QUESTION # 194
An application is processing clickstream data using Amazon Kinesis. The clickstream data feed into Kinesis experiences periodic spikes. The PutRecords API call occasionally fails and the logs show that the failed call returns the response shown below:

Which techniques will help mitigate this exception? (Choose two.)

A. Use Amazon SNS instead of Kinesis.
B. Reduce the number of KCL consumers.
C. Implement retries with exponential backoff.
D. Use a PutRecord API instead of PutRecords.
E. Reduce the frequency and/or size of the requests.

Answer: C,E

Explanation:
ProvisionedThroughputExceededException: The request rate for the stream is too high, or the requested data is too large for the available throughput. Reduce the frequency or size of your requests.
https://docs.aws.amazon.com/kinesis/latest/APIReference/API_PutRecords.html

NEW QUESTION # 195
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