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After successfully passing the Amazon DVA-C01 exam, you will obtain the Amazon AWS Certified Developer – Associate certification. As a certified specialist, your resume and social media profiles will be more noticeable and impressive to the employers. Your general employability will go up and there will be more job roles to apply for. You can also negotiate for a higher salary and the employers will be willing to pay more. According to the PayScale reports, the average salary for the certificate holders is $69,000-$185,000 per year.
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Amazon AWS Certified Developer Associate Exam (DVA-C02) Sample Questions (Q242-Q247):
NEW QUESTION # 242
A social media company is using Amazon Cognito in order to synchronize profiles across different mobile devices, to enable end users to have a seamless experience.
Which of the following configurations can be used to silently notify users whenever an update is available on all other devices?
- A. Use the SyncCallback interface to receive notifications on the application.
- B. Use an Amazon Cognito stream to analyze the data and push the notifications.
- C. Use the push synchronization feature with the appropriate IAM role.
- D. Modify the user pool to include all the devices which keep them in sync.
Answer: C
Explanation:
Explanation
https://docs.aws.amazon.com/cognito/latest/developerguide/push-sync.html
NEW QUESTION # 243
A user has launched five instances with ELB. How can the user add the sixth EC2 instance to ELB?
- A. The ELB can only have a maximum of five instances.
- B. The user can add the instance and change the ELB config file.
- C. The user can add the sixth instance on the fly.
- D. The user must stop the ELB and add the sixth instance.
Answer: C
Explanation:
Elastic Load Balancing automatically distributes incoming traffic across multiple EC2 instances. You
create a load balancer and register instances with the load balancer in one or more Availability Zones.
The load balancer serves as a single point of contact for clients. This enables you to increase the
availability of your application. You can add and remove EC2 instances from your load balancer as your
needs change, without disrupting the overall flow of information.
Reference: http://docs.aws.amazon.com/ElasticLoadBalancing/latest/DeveloperGuide/SvcIntro.html
NEW QUESTION # 244
A Developer has been asked to build a real-time dashboard web application to visualize the key prefixes and storage size of objects in Amazon S3 buckets. Amazon DynamoDB will be used to store the Amazon S3 metadata.
What is the optimal and MOST cost-effective design to ensure that the real-time dashboard is kept up to date with the state of the objects in the Amazon S3 buckets?
- A. Use Amazon S3 Event Notification backed by a Lambda function to persist the metadata into DynamoDB. Have the web application poll the DynamoDB table to reflect this change.
- B. Create a new Amazon EMR cluster to get all the metadata about Amazon S3 objects; persist the metadata into DynamoDB. Have the web application poll the DynamoDB table to reflect this change.
- C. Use an Amazon CloudWatch event backed by an AWS Lambda function. Issue an Amazon S3 API call to get a list of all Amazon S3 objects and persist the metadata within DynamoDB. Have the web application poll the DynamoDB table to reflect this change.
- D. Run a cron job within an Amazon EC2 instance to list all objects within Amazon S3 and persist the metadata into DynamoDB. Have the web application poll the DynamoDB table to reflect this change.
Answer: A
NEW QUESTION # 245
A company has a legacy application that was migrated to a fleet of Amazon EC2 instances. The application stores data in a MySQL database that is currently installed on a single EC2 instance.
The company has decided to migrate the database from the EC2 instance to MySQL on Amazon EDS.
What should the Developer do to update the application to support data storage in Amazon RDS?
- A. Create a new EC2 instance with an IAM role that allows access to the new RDS database.
- B. Create an AWS Lambda function that will route traffic, from the EC2 instance to the RDS database.
- C. Add a script to the EC2 instance that implements an AWS SDK for requesting database credentials.
- D. Update the database connection parameters in the application to point to the new RDS instance.
Answer: D
NEW QUESTION # 246
When using the AWS Encryption SDK now does the developer keep track of the data encryption keys used to encrypt data?
- A. The SDK stores the data encryption keys automatically m Amazon S3
- B. The developer must manually Keep track of the data encryption keys used for each data object
- C. The data encryption key is stored in the userdata for the EC2 instance
- D. The SDK encrypts the data encryption key and stores it (encrypted) as part of the returned ciphertext
Answer: D
NEW QUESTION # 247
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