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You are writing to a DynamoDB table and receive the following exception:" ProvisionedThroughputExceededException". though according to your Cloudwatch metrics for the table, you are not exceeding your provisioned throughput. What could be an explanation for this?
During non-peak hours, a Developer wants to minimize the execution time of a full Amazon DynamoDB table scan without affecting normal workloads. The workloads average half of the strongly consistent read capacity units during non-peak hours. How would the Developer optimize this scan?
You are providing AWS consulting services for a company developing a new mobile application that will be leveraging Amazon SNS Mobile Push for push notifications. In order to send direct notification messages to individual devices each device registration identifier or token needs to be registered with SNS; however the developers are not sure of the best way to do this. You advise them to:
A developer runs an application that uses an Amazon API Gateway REST API. The developer needs to implement a solution to proactively monitor the health of both API responses and latencies in case a deployment causes a service disruption despite passing deployment pipeline tests. The solution also must check for endpoint vulnerability and unauthorized changes to APIs. URLs, and website content. Which solution will meet these requirements?
Which of the following are correct statements with policy evaluation logic in AWS Identity and Access Management? Choose 2 answers
An application stores payroll information nightly in DynamoDB for a large number of employees across hundreds of offices. Item attributes consist of individual name, office identifier, and cumulative daily hours. Managers run reports for ranges of names working in their office. One query is. "Return all Items in this office for names starting with A through E". Which table configuration will result in the lowest impact on provisioned throughput for this query?
A company is migrating a web application from on premises to AWS. The company needs to move session storage from the application code to a shared service as part of the migration. The session storage data must be encrypted at rest. Which AWS services meet these requirements? (Choose two.)
A developer has written the following 1AM policy to provide access to an Amazon S3 bucket: Which access does the policy allow regarding the s3:GetObject and s3:PutObject actions'?
Games-R-Us is launching a new game app for mobile devices. Users will log into the game using their existing Facebook account and the game will record player data and scoring information directly to a DynamoDB table. What is the most secure approach for signing requests to the DynamoDB API?
A developer is integrating Amazon ElastiCache in an application. The cache will store data from a database. The cached data must populate real-time dashboards. Which caching strategy will meet these requirements?

Question 191

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An application displays a status dashboard. The status is updated by 1 KB messages from an SQS queue. Although the status changes infrequently, the Developer must minimize the time between the message arrival in the queue and the dashboard update.

What technique provides the shortest delay in updating the dashboard?

A.
Retrieve the messages from the queue using long polling every 20 seconds.
A.
Retrieve the messages from the queue using long polling every 20 seconds.
Answers
B.
Reduce the size of the messages by compressing them before sending.
B.
Reduce the size of the messages by compressing them before sending.
Answers
C.
Retrieve the messages from the queue using short polling every 10 seconds.
C.
Retrieve the messages from the queue using short polling every 10 seconds.
Answers
D.
Reduce the size of each message payload by sending it in two parts.
D.
Reduce the size of each message payload by sending it in two parts.
Answers
Suggested answer: A

Explanation:

https://docs.aws.amazon.com/ko_kr/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqsshort-and-long-polling.html#sqs-short-long-polling-differences

Question 192

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A company is using AWS CodePipeline to deliver one of its applications. The delivery pipeline is triggered by changes to the master branch of an AWS CodeCommit repository and uses AWS CodeBuild to implement the test and build stages of the process and AWS CodeDeploy to deploy the application.

The pipeline has been operating successfully for several months and there have been no modifications. Following a recent change to the application’s source code, AWS CodeDeploy has not deployed the updates application as expected. What are the possible causes? (Choose two.)

A.
The change was not made in the master branch of the AWS CodeCommit repository.
A.
The change was not made in the master branch of the AWS CodeCommit repository.
Answers
B.
One of the earlier stages in the pipeline failed and the pipeline has terminated.
B.
One of the earlier stages in the pipeline failed and the pipeline has terminated.
Answers
C.
One of the Amazon EC2 instances in the company’s AWS CodePipeline cluster is inactive.
C.
One of the Amazon EC2 instances in the company’s AWS CodePipeline cluster is inactive.
Answers
D.
The AWS CodePipeline is incorrectly configured and is not executing AWS CodeDeploy.
D.
The AWS CodePipeline is incorrectly configured and is not executing AWS CodeDeploy.
Answers
E.
AWS CodePipeline does not have permissions to access AWS CodeCommit.
E.
AWS CodePipeline does not have permissions to access AWS CodeCommit.
Answers
Suggested answer: A, B

Question 193

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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.
Modify the user pool to include all the devices which keep them in sync.
A.
Modify the user pool to include all the devices which keep them in sync.
Answers
B.
Use the SyncCallback interface to receive notifications on the application.
B.
Use the SyncCallback interface to receive notifications on the application.
Answers
C.
Use an Amazon Cognito stream to analyze the data and push the notifications.
C.
Use an Amazon Cognito stream to analyze the data and push the notifications.
Answers
D.
Use the push synchronization feature with the appropriate IAM role.
D.
Use the push synchronization feature with the appropriate IAM role.
Answers
Suggested answer: D

Explanation:

https://docs.aws.amazon.com/cognito/latest/developerguide/push-sync.html

Question 194

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A website’s page load times are gradually increasing as more users access the system at the same time. Analysis indicates that a user profile is being loaded from a database in all the web pages being visited by each user and this is increasing the database load and the page load latency. To address this issue the Developer decides to cache the user profile data. Which caching strategy will address this situation MOST efficiently?

A.
Create a new Amazon EC2 Instance and run a NoSQL database on it. Cache the profile data within this database using the write-through caching strategy.
A.
Create a new Amazon EC2 Instance and run a NoSQL database on it. Cache the profile data within this database using the write-through caching strategy.
Answers
B.
Create an Amazon ElastiCache cluster to cache the user profile data. Use a cache-aside caching strategy.
B.
Create an Amazon ElastiCache cluster to cache the user profile data. Use a cache-aside caching strategy.
Answers
C.
Use a dedicated Amazon RDS instance for caching profile data. Use a write-through caching strategy.
C.
Use a dedicated Amazon RDS instance for caching profile data. Use a write-through caching strategy.
Answers
D.
Create an ElastiCache cluster to cache the user profile data. Use a write-through caching strategy.
D.
Create an ElastiCache cluster to cache the user profile data. Use a write-through caching strategy.
Answers
Suggested answer: B

Explanation:

https://docs.aws.amazon.com/AmazonElastiCache/latest/mem-ug/Strategies.html

Question 195

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An application needs to use the IP address of the client in its processing. The application has been moved into AWS and has been placed behind an Application Load Balancer (ALB). However, all the client IP addresses now appear to be the same. The application must maintain the ability to scale horizontally.

Based on this scenario, what is the MOST cost-effective solution to this problem?

A.
Remove the application from the ALB. Delete the ALB and change Amazon Route 53 to direct traffic to the instance running the application.
A.
Remove the application from the ALB. Delete the ALB and change Amazon Route 53 to direct traffic to the instance running the application.
Answers
B.
Remove the application from the ALB. Create a Classic Load Balancer in its place. Direct traffic to the application using the HTTP protocol.
B.
Remove the application from the ALB. Create a Classic Load Balancer in its place. Direct traffic to the application using the HTTP protocol.
Answers
C.
Alter the application code to inspect the X-Forwarded-For header. Ensure that the code can work properly if a list of IP addresses is passed in the header.
C.
Alter the application code to inspect the X-Forwarded-For header. Ensure that the code can work properly if a list of IP addresses is passed in the header.
Answers
D.
Alter the application code to inspect a custom header. Alter the client code to pass the IP address in the custom header.
D.
Alter the application code to inspect a custom header. Alter the client code to pass the IP address in the custom header.
Answers
Suggested answer: C

Question 196

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A development team is using AWS Elastic Beanstalk to deploy a two-tier application that consists of a load-balanced web tier and an Amazon RDS database tier in production. The team would like to separate the RDS instance from the Elastic Beanstalk.

How can this be accomplished?

A.
Use the Elastic Beanstalk CLI to disassociate the database.
A.
Use the Elastic Beanstalk CLI to disassociate the database.
Answers
B.
Use the AWS CLI to disassociate the database.
B.
Use the AWS CLI to disassociate the database.
Answers
C.
Change the deployment policy to disassociate the database.
C.
Change the deployment policy to disassociate the database.
Answers
D.
Recreate a new Elastic Beanstalk environment without Amazon RDS.
D.
Recreate a new Elastic Beanstalk environment without Amazon RDS.
Answers
Suggested answer: D

Explanation:

https://aws.amazon.com/premiumsupport/knowledge-center/decouple-rds-from-beanstalk/

Question 197

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According to best practice, how should access keys be managed in AWS? (Choose two.)

A.
Use the same access key in all applications for consistency.
A.
Use the same access key in all applications for consistency.
Answers
B.
Delete all access keys for the account root user.
B.
Delete all access keys for the account root user.
Answers
C.
Leave unused access keys in the account for tracking purposes.
C.
Leave unused access keys in the account for tracking purposes.
Answers
D.
Embed and encrypt access keys in code for continuous deployment.
D.
Embed and encrypt access keys in code for continuous deployment.
Answers
E.
Use Amazon IAM roles instead of access keys where possible.
E.
Use Amazon IAM roles instead of access keys where possible.
Answers
Suggested answer: B, E

Question 198

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The development team is working on an API that will be served from Amazon API gateway. The API will be served from three environments: development, test, and production. The API Gateway is configured to use 237 GB of cache in all three stages.

Which is the MOST cost-efficient deployment strategy?

A.
Create a single API Gateway with all three stages.
A.
Create a single API Gateway with all three stages.
Answers
B.
Create three API Gateways, one for each stage in a single AWS account.
B.
Create three API Gateways, one for each stage in a single AWS account.
Answers
C.
Create an API Gateway in three separate AWS accounts.
C.
Create an API Gateway in three separate AWS accounts.
Answers
D.
Enable the cache for development and test environments only when needed.
D.
Enable the cache for development and test environments only when needed.
Answers
Suggested answer: D

Question 199

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An application running on an Amazon Linux EC2 instance needs to manage the AWS infrastructure.

How can the EC2 instance be configured to make AWS API calls securely?

A.
Sign the AWS CLI command using the signature version 4 process.
A.
Sign the AWS CLI command using the signature version 4 process.
Answers
B.
Run the aws configure AWS CLI command and specify the access key id and secret access key.
B.
Run the aws configure AWS CLI command and specify the access key id and secret access key.
Answers
C.
Specify a role for the EC2 instance with the necessary privileges.
C.
Specify a role for the EC2 instance with the necessary privileges.
Answers
D.
Pass the access key id and secret access key as parameters for each AWS CLI command.
D.
Pass the access key id and secret access key as parameters for each AWS CLI command.
Answers
Suggested answer: C

Question 200

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A company is migrating from a monolithic architecture to a microservices-based architecture. The Developers need to refactor the application so that the many microservices can asynchronously communicate with each other without impacting performance.

Use of which managed AWS services will enable asynchronous message passing? (Choose two.)

A.
Amazon SQS
A.
Amazon SQS
Answers
B.
Amazon Cognito
B.
Amazon Cognito
Answers
C.
Amazon Kinesis
C.
Amazon Kinesis
Answers
D.
Amazon SNS
D.
Amazon SNS
Answers
E.
Amazon ElastiCache
E.
Amazon ElastiCache
Answers
Suggested answer: A, D
Total 608 questions
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