When writing a Lambda function, what is the benefit of instantiating AWS clients outside the scope of the handler?
A. Legibility and stylistic convention
B. Taking advantage of connection re-use
C. Better error handling
D. Creating a new instance per invocation
A Developer must analyze performance issues with production-distributed applications written as AWS Lambda functions. These distributed Lambda applications invoke other components that make up the applications.
How should the Developer identify and troubleshoot the root cause of the performance issues in production?
A. Add logging statements to the Lambda functions, then use Amazon CloudWatch to view the logs.
B. Use AWS Cloud Trail and then examine the logs
C. Use AWS X-Ray, then examine the segments and errors
D. Run Amazon Inspector agents and then analyze performance
In AWS, which security aspects are the customer's responsibility? Choose 4 answers
A. Life-cycle management of IAM credentials
B. Decommissioning storage devices
C. Security Group and ACL (Access Control List) settings
D. Encryption of EBS (Elastic Block Storage) volumes
E. Controlling physical access to compute resources
F. Patch management on the EC2 instance's operating system
n on-premises application makes repeated calls to store files to Amazon S3. As usage of the application has increased, "LimitExceeded" errors are being logged.
What should be changed to fix this error?
A. Implement exponential backoffs in the application.
B. Load balance the application to multiple servers.
C. Move the application to Amazon EC2.
D. Add a one second delay to each API call.
An organization must store thousands of sensitive audio and video files in an Amazon S3 bucket.
Organizational security policies require that all data written to this bucket be encrypted.
How can compliance with this policy be ensured?
A. Use AWS Lambda to send notifications to the security team if unencrypted objects are pun in the bucket.
B. Configure an Amazon S3 bucket policy to prevent the upload of objects that do not contain the x-amzserver-side-encryption header.
C. Create an Amazon CloudWatch event rule to verify that all objects stored in the Amazon S3 bucket are encrypted.
D. Configure an Amazon S3 bucket policy to prevent the upload of objects that contain the x-amz-server-sideencryption header.
A Development team has pushed out 10 applications running on several Amazon EC2 instances. The Operations team is asking for a graphical representation of one key performance metric for each application. These metrics should be available on one screen for easy monitoring.
Which steps should the Developer take to accomplish this using Amazon CloudWatch?
A. Create a custom namespace with a unique metric name for each application.
B. Create a custom dimension with a unique metric name for each application.
C. Create a custom event with a unique metric name for each application.
D. Create a custom alarm with a unique metric name for each application.
Which of the following are valid arguments for an SNS Publish request? Choose 3 answers A. TopicAm
B. Subject
C. Destination
D. Format
E. Message
F. Language
A Developer must deploy a new AWS Lambda function using an AWS CloudFormation template.
Which procedures will deploy a Lambda function? (Select TWO.)
A. Upload the code to an AWS CodeCommit repository, then add a reference to it in an AWS::Lambda::Function resource in the template.
B. Create an AWS::Lambda::Function resource in the template, then write the code directly inside the CloudFormation template.
C. Upload a .ZIP file containing the function code to Amazon S3, then add a reference to it in an AWS::Lambda::Function resource in the template.
D. Upload a .ZIP file to AWS CloudFormation containing the function code, then add a reference to it in an AWS::Lambda::Function resource in the template.
E. Upload the function code to a private Git repository, then add a reference to it in an AWS::Lambda::Function resource in the template.
Where can PortMapping be defined when launching containers in Amazon ECS?
A. Security groups
B. Amazon Elastic Container Registry (Amzon ECR)
C. Container agent
D. Task definition
A company needs a new REST API that can return information about the contents of an Amazon S3 bucket, such as a count of the objects stored in it. The company has decided that the new API should be written as a microservice using AWS Lambda and Amazon API Gateway.
How should the Developer ensure that the microservice has the necessary access to the Amazon S3 bucket, while adhering to security best practices?
A. Create an IAM user that has permissions to access the Amazon S3 bucket, and store the IAM user credentials in the Lambda function source code.
B. Create an IAM role that has permissions to access the Amazon S3 bucket and assign it to the Lambda function as its execution role.
C. Create an Amazon S3 bucket policy that specifies the Lambda service as its principal and assign it to the Amazon S3 bucket.
D. Create an IAM role, attach the AmazonS3FullAccess managed policy to it, and assign the role to the Lambda function as its execution role.
Nowadays, the certification exams become more and more important and required by more and more enterprises when applying for a job. But how to prepare for the exam effectively? How to prepare for the exam in a short time with less efforts? How to get a ideal result and how to find the most reliable resources? Here on Vcedump.com, you will find all the answers. Vcedump.com provide not only Amazon exam questions, answers and explanations but also complete assistance on your exam preparation and certification application. If you are confused on your DVA-C01 exam preparations and Amazon certification application, do not hesitate to visit our Vcedump.com to find your solutions here.