An application is using single -node Amazon ElastiCache for Redis instance to improve read performance. Over time, demand for the application has increased exponentially, which has increased the load on the ElastiCache instance. It is critical that this cache layer handles the load and is resilient in case of node failures.
What can the Developer do to address the load and resiliency requirements?
A. Add a read replica instance.
B. Migrate to a Memcached cluster.
C. Migrate to an Amazon ElastiCache service cluster.
D. Vertically scale the ElastiCache instance.
A developer has written an Amazon kinesis Data streams application. As usage grows and traffic over time, the application is regularly receiving provisionedThroughputExceededException error messages. Which steps should the Developer take to resolve the error? (Select Two.)
A. Use Auto scaling to scale the stream for better performance.
B. Increase the delay between the GetRecords call and the PutRecords call.
C. Increase the number of shards in the data stream.
D. Specify a shard iterator using the shardlterator parameter.
E. Implement exponential backoff on the GetRecords call and the PutRecords call.
A developer is building an application that needs to store date in Amazon S3. Management requires that the data be encrypted before is it sent to Amazon S3 for storage. The encryption keys need to be managed by the security team. Which approach should the developer take to meet these requirements?
A. Implement server-side encryption using customer-provided encryption keys (SSE-C).
B. Implement server-side encryption by using client-side master key.
C. Implement client-side encryption using an AWS KMS managed customer master key (CMK).
D. Implement Client-side encryption using Amazon S3 managed keys.
A Developer is migrating an on-premises application to AWS. The application currently takes user uploads and saves them to a local directory on the server. All uploads must be saved and made immediately available to all instances in an Auto scaling group.
Which approach will meet these requirements?
A. Use Amazon EBS and configure the application AMI to use a snapshot of the same EBS instance on boot.
B. Use Amazon S3 and rearchitect the application so all uploads are placed in S3.
C. Use instance storage and share it between instances launched from the same Amazon machine image (AMI).
D. Use Amazon EBS and file synchronization software to achieve eventual consistency among the auto scaling group.
An application is using a single-node Amazon ElastiCache for Redis instance to improve read performance. Over time, demand for the application has increased exponentially, which has increased the load on the ElastiCache instance. It is critical that this cache layer handles the load and is resilient in case of node failures.
What can the Developer do to address the load and resiliency requirements?
A. Add a read replica instance.
B. Migrate to a Memcached cluster.
C. Migrate to an Amazon Elasticsearch Service cluster.
D. Vertically scale the ElastiCache instance.
A company wants to containerize an existing three-tier web application and deploy it to Amazon ECS Fargate. The application is using session data to keep track of user activities. Which approach would provide the BEST user experience?
A. Provision a Redis cluster in Amazon ElastiCache and save the session data in the cluster.
B. Create a session table in Amazon Redshift and save the session data in the database table.
C. Enable session stickiness in the existing Network Load Balancer and manage the session data in the container.
D. Use an Amazon S3 bucket as data store and save the session data in the bucket.
A Developer has an Amazon DynamoDB table that must be in provisioned mode to comply with user requirements. The application needs to support the following:
1.
Average item size: 10 KB
2.
Item reads each second: 10 strongly consistent
3.
Item writes each second: 2 transactional
Which read and write capacity cost-effectively meets these requirements?
A. Read 10; write 2
B. Read 30; write 40
C. Use on-demand scaling
D. Read 300; write 400
An application is experiencing performance issues based on increased demand. This increased demand is on read-only historical records pulled from an Amazon RDS-hosted database with custom views and queries. A Developer must improve performance without changing the database structure.
Which approach will improve performance and MINIMIZE management overhead?
A. Deploy Amazon DynamoDB, move all the data, and point to DynamoDB.
B. Deploy Amazon ElastiCache for Redis and cache the data for the application.
C. Deploy Memcached on Amazon EC2 and cache the data for the application.
D. Deploy Amazon DynamoDB Accelerator (DAX) on Amazon RDS to improve cache performance.
An application has the following requirements:
1.
Performance efficiency of seconds with up to a minute of latency.
2.
The data storage size may grow up to thousands of terabytes.
3.
Per-message sizes may vary between 100 KB and 100 MB.
4.
Data can be stored as key/value stores supporting eventual consistency. What is the MOST cost-effective AWS service to meet these requirements?
A. Amazon DynamoDB
B. Amazon S3
C. Amazon RDS (with a MySQL engine)
D. Amazon ElastiCache
A Company runs continuous integration/continuous delivery (CI/CD) pipelines for its application on AWS CodePipeline. A Developer must write unit tests and run them as part of the pipelines before staging the artifacts for testing. How should the Developer incorporate unit tests as part of CI/CD pipelines?
A. Create a separate CodePipeline pipeline to run unit tests
B. Update the AWS CodeBuild specification to include a phase for running unit tests
C. Install the AWS CodeDeploy agent on an Amazon EC2 instance to run unit tests
D. Create a testing branch in AWS CodeCommit to run unit tests
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