AWS Certified Developer - Associate

• #161

  What is one key difference between an Amazon EBS-backed and an instance-store backed instance?

  • AVirtual Private Cloud requires EBS backed instances.
  • BAmazon EBS-backed instances can be stopped and restarted.
  • CAuto scaling requires using Amazon EBS-backed instances.
  • DInstance-store backed instances can be stopped and restarted.
  उत्तर दिखाएँ
• #162

  A Developer is trying to monitor an application's status by running a cron job that returns 1 if the service is up and 0 if the service is down. The Developer created code that uses an AWS CLI put-metric-alarm command to publish the custom metrics to Amazon CloudWatch and create an alarm. However, the Developer is unable to create an alarm as the custom metrics do not appear in the CloudWatch console. What is causing this issue?

  • ASending custom metrics using the CLI is not supported.
  • BThe Developer needs to use the put-metric-data command.
  • CThe Developer must use a unified CloudWatch agent to publish custom metrics.
  • DThe code is not running on an Amazon EC2 instance.
  उत्तर दिखाएँ
• #163

  A company requires that AWS Lambda functions written by Developers log errors so System Administrators can more effectively troubleshoot issues. What should the Developers implement to meet this need?

  • APublish errors to a dedicated Amazon SQS queue.
  • BCreate an Amazon CloudWatch Events event trigger based on certain Lambda events.
  • CReport errors through logging statements in Lambda function code.
  • DSet up an Amazon SNS topic that sends logging statements upon failure.
  उत्तर दिखाएँ
• #1643 चुनें

  A Developer wants to enable AWS X-Ray for a secure application that runs in an Amazon ECS environment. What combination of steps will enable X-Ray? (Select THREE)

  • ACreate a Docker image that runs the X-Ray daemon.
  • BAdd instrumentation to the application code for X-Ray.
  • CInstall the X-Ray daemon on the underlying EC2 instance.
  • DConfigure and use an IAM EC2 instance role.
  • ERegister the application with X-Ray.
  • FConfigure and use an IAM role for tasks.
  उत्तर दिखाएँ
• #165

  A mobile app stores blog posts in an Amazon DynamoDB table. Millions of posts are added every day, and each post represents a single item in the table. The mobile app requires only recent posts. Any post that is older than 48 hours can be removed. What is the MOST cost-effective way to delete posts that are older than 48 hours?

  • AFor each item, add a new attribute of type String that has a timestamp that is set to the blog post creation time. Create a script to find old posts with a table scan and remove posts that are older than 48 hours by using the BatchWriteItem API operation. Schedule a cron job on an Amazon EC2 instance once an hour to start the script.
  • BFor each item, add a new attribute of type String that has a timestamp that is set to the blog post creation time. Create a script to find old posts with a table scan and remove posts that are older than 48 hours by using the BatchWriteItem API operation. Place the script in a container image. Schedule an Amazon Elastic Container Service (Amazon ECS) task on AWS Fargate that invokes the container every 5 minutes.
  • CFor each item, add a new attribute of type Date that has a timestamp that is set to 48 hours after the blog post creation time. Create a Global Secondary Index (GSI) that uses the new attribute as a sort key. Create an AWS Lambda function that references the GSI and removes expired items by using the BatchWriteItem API operation. Schedule the function with an Amazon CloudWatch event every minute.
  • DFor each item, add a new attribute of type Number that has a timestamp that is set to 48 hours after the blog post creation time. Configure the DynamoDB table with a TTL that references the new attribute.
  उत्तर दिखाएँ
• #166

  A development team consists of 10 team members. Similar to a home directory for each team member, the manager wants to grant access to user-specific folders in an Amazon S3 bucket. For the team member with the username TeamMemberX, the snippet of the IAM policy looks like this. Instead of creating distinct policies for each team member, what approach can be used to make this policy snippet generic for all team members?

  • AUse IAM policy condition.
  • BUse IAM policy principal.
  • CUse IAM policy variables.
  • DUse IAM policy resource.
  उत्तर दिखाएँ
• #167

  A developer Is designing an AWS Lambda function that create temporary files that are less than 10 MB during execution. The temporary files will be accessed and modified multiple times during execution. The developer has no need to save or retrieve these files in the future. Where should the temporary file be stored?

  • Athe /tmp directory.
  • BAmazon EFS.
  • CAmazon EBS.
  • DAmazon S3.
  उत्तर दिखाएँ
• #168

  Given the source code for an AWS Lambda function in the local store.py containing a handler function called get_store and the following AWS CloudFormation template. What should be done to prepare the template so that it can be deployed using the AWS CLI command aws cloudformation deploy?

  • AUse AWS CloudFormation compile to base64 encode and embed the source file into a modified CloudFormation template.
  • BUse AWS CloudFormation package to upload the source code to an Amazon S3 bucket and produce a modified CloudFormation template.
  • CUse AWS Lambda zip to package the source file together with the CloudFormation template and deploy the resulting zip archive.
  • DUse AWS Serverless create-package to embed the source file directly into the existing CloudFormation template.
  उत्तर दिखाएँ
• #169

  A developer has written a multi-threaded application that is running on a fleet of Amazon EC2 instances. The operations team has requested a graphical method to monitor the number of running threads over time. What is the MOST efficient way to fulfill this request?

  • APeriodically send the thread count to AWS X-Ray segments, then generate a service graph on demand.
  • BCreate a custom Amazon CloudWatch metric and periodically perform a PutMetricData call with the current thread count.
  • CPeriodically log thread count data to Amazon S3. Use Amazon Kinesis to process the data into a graph.
  • DPeriodically write the current thread count to a table using Amazon DynarnoDB and use Amazon CloudFront to create a graph.
  उत्तर दिखाएँ
• #170

  Company C has recently launched an online commerce site for bicycles on AWS. They have a Product DynamoDB table that stores details for each bicycle, such as, manufacturer, color, price, quantity and size to display in the online store. Due to customer demand, they want to include an image for each bicycle along with the existing details. Which approach below provides the least impact to provisioned throughput on the Product table?

  • ASerialize the image and store it in multiple DynamoDB tables.
  • BCreate an Images DynamoDB table to store the Image with a foreign key constraint to the Product table.
  • CAdd an image data type to the Product table to store the images in binary format.
  • DStore the images in Amazon S3 and add an S3 URL pointer to the Product table item for each image.
  उत्तर दिखाएँ
• #171

  A company wants to implement a continuous integration for its workloads on AWS. The company wants to trigger unit test in its pipeline for commits-on its code repository, and wants to be notified of failure events in the pipeline. How can these requirements be met?

  • AStore the source code in AWS CodeCommit. Create a CodePipeline to automate unit testing. Use Amazon SNS to trigger notifications of failure events.
  • BStore the source code in GitHub. Create a CodePipeline to automate unit testing. Use Amazon SES to trigger notifications of failure events.
  • CStore the source code on GitHub. Create a CodePipeline to automate unit testing. Use Amazon CloudWatch to trigger notifications of failure events.
  • DStore the source code in AWS CodeCommit. Create a CodePipeline to automate unit testing. Use Amazon CloudWatch to trigger notification of failure events.
  उत्तर दिखाएँ
• #172

  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?

  • AAdd a read replica instance.
  • BMigrate to a Memcached cluster.
  • CMigrate to an Amazon Elasticsearch Service cluster.
  • DVertically scale the ElastiCache instance.
  उत्तर दिखाएँ
• #1732 चुनें

  Which of the following are correct statements with policy evaluation logic in AWS Identity and Access Management? (Choose TWO)

  • ABy default, all requests are denied.
  • BAn explicit allow overrides an explicit deny.
  • CAn explicit allow overrides default deny.
  • DAn explicit deny does not override an explicit allow.
  • EBy default, all request are allowed.
  उत्तर दिखाएँ
• #174

  An application is being developed to audit several AWS accounts. The application will run in Account A and must access AWS services in Accounts B and C. What is the MOST secure way to allow the application to call AWS services in each audited account?

  • AConfigure cross-account roles in each audited account. Write code in Account A that assumes those roles.
  • BUse S3 cross-region replication to communicate among accounts, with Amazon S3 event notifications to trigger Lambda functions.
  • CDeploy an application in each audited account with its own role. Have Account A authenticate with the application.
  • DCreate an IAM user with an access key in each audited account. Write code in Account A that uses those access keys.
  उत्तर दिखाएँ
• #175

  Amazon S3 has the following structure: S3://BUCKET/FOLDERNAME/FILENAME.zip. Which S3 best practice would optimize performance with thousands of PUT request each second to a single bucket?

  • APrefix folder names with user id; for example, s3://BUCKET/2013-FOLDERNAME/FILENAME.zip.
  • BPrefix file names with timestamps; for example, s3://BUCKET/FOLDERNAME/2013-26-05-15-00-00-FILENAME.zip.
  • CPrefix file names with random hex hashes; for example, s3://BUCKET/FOLDERNAME/23a6-FILENAME.zip.
  • DPrefix folder names with random hex hashes; for example, s3://BUCKET/23a6-FOLDERNAME/FILENAME.zip.
  उत्तर दिखाएँ
• #1762 चुनें

  Which DynamoDB limits can be raised by contacting AWS support? (Choose TWO)

  • AThe number of hash keys per account.
  • BThe maximum storage used per account.
  • CThe number of tables per account.
  • DThe number of local secondary indexes per account.
  • EThe number of provisioned throughput units per account.
  उत्तर दिखाएँ
• #1773 चुनें

  Which of the following are valid arguments for an SNS Publish request? (Choose THREE)

  • ATopicArn.
  • BSubject.
  • CDestination.
  • DFormat.
  • EMessage.
  • FLanguage.
  उत्तर दिखाएँ
• #178

  A Developer has written a serverless application using multiple AWS services. The business logic is written as a Lambda function which has dependencies on third-party libraries. The Lambda function endpoints will be exposed using Amazon API Gateway. The Lambda function will write the information to Amazon DynamoDB. The Developer is ready to deploy the application but must have the ability to rollback. How can this deployment be automated, based on these requirements?

  • ADeploy using Amazon Lambda API operations to create the Lambda function by providing a deployment package.
  • BUse an AWS CloudFormation template and use CloudFormation syntax to define the Lambda function resource in the template.
  • CUse syntax conforming to the Serverless Application Model in the AWS CloudFormation template to define the Lambda function resource.
  • DCreate a bash script which uses AWS CLI to package and deploy the application.
  उत्तर दिखाएँ
• #179

  A Developer is working on an AWS Lambda function that accesses Amazon DynamoDB. The Lambda function must retrieve an item and update some of its attributes, or create the item if it does not exist. The Lambda function has access to the primary key. Which IAM permissions should the Developer request for the Lambda function to achieve this functionality?

  • Adynamodb:DeleteItem dynamodb:GetItem dynamodb:PutItem.
  • Bdynamodb:UpdateItem dynamodb:GetItem dynamodb:DescribeTable.
  • Cdynamodb:GetRecords dynamodb:PutItem dynamodb:UpdateTable.
  • Ddynamodb:UpdateItem dynamodb:GetItem dynamodb:PutItem.
  उत्तर दिखाएँ
• #180

  An Amazon RDS database instance is used by many applications to look up historical data. The query rate is relatively constant. When the historical data is updated each day, the resulting write traffic slows the read query performance and affects all application users. What can be done to eliminate the performance impact on application users?

  • AMake sure Amazon RDS is Multi-AZ so it can better absorb increased traffic.
  • BCreate an RDS Read Replica and direct all read traffic to the replica.
  • CImplement Amazon ElastiCache in front of Amazon RDS to buffer the write traffic.
  • DUse Amazon DynamoDB instead of Amazon RDS to buffer the read traffic.
  उत्तर दिखाएँ

अपना स्कोर ट्रैक करना, समयबद्ध मॉक परीक्षा देना और AI व्याख्या पाना चाहते हैं? निःशुल्क खाता बनाएँ