ExamGecko
Search Search Login
Home Home / Amazon / DVA-C02
Question list
Search
Search

List of questions

Search
Open VPLUS File
Convert VPLUS to PDF

Related questions

A developer is building an application that gives users the ability to view bank account from multiple sources in a single dashboard. The developer has automated the process to retrieve API credentials for these sources. The process invokes an AWS Lambda function that is associated with an AWS CloudFormation cotton resource. The developer wants a solution that will store the API credentials with minimal operational overhead. When solution will meet these requirements?
A developer needs to store configuration variables for an application. The developer needs to set an expiration date and time for me configuration. The developer wants to receive notifications. Before the configuration expires. Which solution will meet these requirements with the LEAST operational overhead?
A company needs to distribute firmware updates to its customers around the world. Which service will allow easy and secure control of the access to the downloads at the lowest cost?
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?
An application that is deployed to Amazon EC2 is using Amazon DynamoDB. The app cation calls the DynamoDB REST API Periodically the application receives a ProvisionedThroughputExceededException error when the application writes to a DynamoDB table. Which solutions will mitigate this error MOST cost-effectively^ (Select TWO)
A company uses an AWS Lambda function to transfer files from an Amazon S3 bucket to the company's SFTP server. The Lambda function connects to the SFTP server by using credentials such as username and password. The company uses Lambda environment variables to store these credentials. A developer needs to implement encrypted username and password credentials. Which solution will meet these requirements?
A developer is working on a Python application that runs on Amazon EC2 instances. The developer wants to enable tracing of application requests to debug performance issues in the code. Which combination of actions should the developer take to achieve this goal? (Select TWO)
A developer is building a new application on AWS. The application uses an AWS Lambda function that retrieves information from an Amazon DynamoDB table. The developer hard coded the DynamoDB table name into the Lambda function code. The table name might change over time. The developer does not want to modify the Lambda code if the table name changes. Which solution will meet these requirements MOST efficiently?
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?
An online sales company is developing a serverless application that runs on AWS. The application uses an AWS Lambda function that calculates order success rates and stores the data in an Amazon DynamoDB table. A developer wants an efficient way to invoke the Lambda function every 15 minutes. Which solution will meet this requirement with the LEAST development effort?

Question 100 - DVA-C02 discussion

Report
Export

An application that is deployed to Amazon EC2 is using Amazon DynamoDB. The app cation calls the DynamoDB REST API Periodically the application receives a ProvisionedThroughputExceededException error when the application writes to a DynamoDB table.

Which solutions will mitigate this error MOST cost-effectively^ (Select TWO)

A.
Modify the application code to perform exponential back off when the error is received.
Answers
A.
Modify the application code to perform exponential back off when the error is received.
B.
Modify the application to use the AWS SDKs for DynamoDB.
Answers
B.
Modify the application to use the AWS SDKs for DynamoDB.
C.
Increase the read and write throughput of the DynamoDB table.
Answers
C.
Increase the read and write throughput of the DynamoDB table.
D.
Create a DynamoDB Accelerator (DAX) cluster for the DynamoDB table.
Answers
D.
Create a DynamoDB Accelerator (DAX) cluster for the DynamoDB table.
E.
Create a second DynamoDB table Distribute the reads and writes between the two tables.
Answers
E.
Create a second DynamoDB table Distribute the reads and writes between the two tables.
Suggested answer: A, B

Explanation:

These solutions will mitigate the error most cost-effectively because they do not require increasing the provisioned throughput of the DynamoDB table or creating additional resources. Exponential backoff is a retry strategy that increases the waiting time between retries to reduce the number of requests sent to DynamoDB. The AWS SDKs for DynamoDB implement exponential backoff by default and also provide other features such as automatic pagination and encryption. Increasing the read and write throughput of the DynamoDB table, creating a DynamoDB Accelerator (DAX) cluster, or creating a second DynamoDB table will incur additional costs and complexity.

Reference: [Error Retries and Exponential Backoff in AWS], [Using the AWS SDKs with DynamoDB]

Show Answer
asked 16/09/2024
Paul A
38 questions
PreviousPreviousNextNext
User
Your answer:
0 comments
Sorted by

Leave a comment first

ExamGecko

Copyright @2023 ExamGecko | All right reserved

Mail us: [email protected]
About us
Contact us
Twitter X
Facebook
Medium
Convert VPLUS to PDF
Open VPLUS files Easily and Quickly
Privacy Policy
Disclaimer
Terms