A developer has an application that asynchronously invokes an AWS Lambda function. The developer wants to store messages that resulted in failed invocations of the Lambda function so that the application can retry the call later.
What should the developer do to accomplish this goal with the LEAST operational overhead?
C
A developer is writing an application in Python. The application runs on AWS Lambda. The application generates a file and needs to upload this file to Amazon S3.
The developer must implement this upload functionality with the least possible change to the application code.
Which solution meets these requirements?
C
An application that is hosted on an Amazon EC2 instance needs access to files that are stored in an Amazon S3 bucket. The application lists the objects that are stored in the S3 bucket and displays a table to the user. During testing, a developer discovers that the application does not show any objects in the list.
What is the MOST secure way to resolve this issue?
B
A developer needs to implement a cache to store data that an application frequently queries from an Amazon RDS for MySQL database. The data structures that will be cached include sets and sorted sets.
How should the developer implement the cache to achieve the LOWEST latency?
B
A developer creates an AWS Lambda function to publish a message to an Amazon Simple Notification Service (Amazon SNS) topic. All message content must be encrypted in transit and at rest between Lambda and Amazon SNS.
A part of the Lambda execution role is as follows:
Which combination of steps should the developer take to meet these requirements? (Choose two.)
AB
A developer is using an AWS Key Management Service (AWS KMS) customer master key (CMK) with imported key material to encrypt data in Amazon S3. The developer accidentally deletes the key material of the CMK and is unable to decrypt the data.
How can the developer decrypt the data that was encrypted by the CMK?
A
A developer needs to launch a new Amazon EC2 instance by using the AWS CLI.
Which AWS CLI command should the developer use to meet this requirement?
D
A development team uses AWS Elastic Beanstalk for application deployment. The development team has configured the application version lifecycle policy to limit the number of application versions to 25. However, even with the application version lifecycle policy, the source bundle is deleted from the Amazon S3 source bucket.
What should the development team do in the Elastic Beanstalk application version lifecycle settings to retain the source code in the S3 bucket?
D
A development team is building a new application that will run on Amazon EC2 and use Amazon DynamoDB as a storage layer. The developers all have assigned IAM user accounts in the same IAM group. The developers currently can launch EC2 instances, and they need to be able to launch EC2 instances with an instance role allowing access to Amazon DynamoDB.
Which AWS IAM changes are needed when creating an instance role to provide this functionality?
B
A banking application processes thousands of transactions each second. Each transaction payload must have end-to-end encryption. The application encrypts each transaction locally by using the AWS Key Management Service (AWS KMS) GenerateDataKey operation. A developer is testing the application and receives a ThrottlingException error.
Which actions are best practices to resolve this error? (Choose two.)
CE
