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NEW QUESTION 52 Your company has developed a web application and is hosting it in an Amazon S3 bucket configured for static website hosting. The application is using the AWS SDK for JavaScript in the browser to access data stored in an Amazon DynamoDB table. How can you ensure that API keys for access to your data in DynamoDB are kept secure?

• A. Store AWS keys in global variables within your application and configure the application to use these credentials when making requests.
• B. Configure S3 bucket tags with your AWS access keys for your bucket hosing your website so that the application can query them for access.
• C. Configure a web identity federation role within IAM to enable access to the correct DynamoDB resources and retrieve temporary credentials.
• D. Create an Amazon S3 role in IAM with access to the specific DynamoDB tables, and assign it to the bucket hosting your website.

Answer: C   NEW QUESTION 53 Your company has a set of resources hosted in AWS. Your IT Supervisor is concerned with the costs being incurred by the resources running in AWS and wants to optimize on the costs as much as possible. Which of the following ways could help achieve this efficiently? Choose 2 answers from the options given below.

• A. Create a script which monitors all the running resources and calculates the costs accordingly. The analyze those resources accordingly and see which can be optimized.
• B. Use the Trusted Advisor to see underutilized resources
• C. Create Cloudwatch logs to monitor underutilized resources and either shutdown or terminate resources which are not required.
• D. Create Cloudwatch alarms to monitor underutilized resources and either shutdown or terminate resources which are not required.

Answer: B,D Explanation: Explanation You can use Cloudwatch alarms to see if resources are below a threshold for long periods of time. If so you can take the decision to either stop them or to terminate the resources. For more information on Cloudwatch alarms, please visit the below URL: * http://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/Ala rmThatSendsCmail.html In the Trusted Advisor, when you enable the Cost optimization section, you will get all sorts of checks which can be used to optimize the costs of your AWS resources. For more information on the Trusted Advisor, please visit the below U RL: * https://aws.amazon.com/premiumsupport/trustedadvisor/   NEW QUESTION 54 After conducting a disaster recovery exercise, an Enterprise Architect discovers that a large team of Database and Storage Administrators need more than seven hours of manual effort to make a flagship application's database functional in a different AWS Region. The Architect also discovers that the recovered database is often missing as much as two hours of data transactions. Which solution provides improved RTO and RPO in a cross-region failover scenario?

• A. Deploy an Amazon RDS Multi-AZ instance backed by a multi-region Amazon EFS. Configure the RDS option group to enable multi-region availability for native automation of cross-region recovery and continuous data replication. Create an Amazon SNS topic subscribed to RDS-impacted events to send emails to the Database Administration team when significant query Latency is detected in a single Availability Zone.
• B. Use Amazon RDS scheduled instance lifecycle events to create a snapshot and specify a frequency to match the RPO. Use Amazon RDS scheduled instance lifecycle event configuration to perform a cross-region snapshot copy into the failover region upon SnapshotCreateComplete events. Configure Amazon CloudWatch to alert when the CloudWatch RDS namespace CPUUtilization metric for the database instance falls to 0% and make a call to Amazon RDS to restore the database snapshot in the failover region.
• C. Create a scheduled Amazon CloudWatch Events rule to make a call to Amazon RDS to create a snapshot from a database instance and specify a frequency to match the RPO. Create an AWS Step Functions task to call Amazon RDS to perform a cross-region snapshot copy into the failover region, and configure the state machine to execute the task when the RDS snapshot create state is complete. Create an SNS topic subscribed to RDS availability events, and push these messages to an Amazon SQS queue located in the failover region. Configure an Auto Scaling group of worker nodes to poll the queue for new messages and make a call to Amazon RDS to restore a database from a snapshot after a checksum on the cross-region copied snapshot returns valid.
• D. Use Amazon SNS topics to receive published messages from Amazon RDS availability and backup events. Use AWS Lambda for three separate functions with calls to Amazon RDS to snapshot a database instance, create a cross-region snapshot copy, and restore an instance from a snapshot. Use a scheduled Amazon CloudWatch Events rule at a frequency matching the RPO to trigger the Lambda function to snapshot a database instance. Trigger the Lambda function to create a cross-region snapshot copy when the SNS topic for backup events receives a new message. Configure the Lambda function to restore an instance from a snapshot to trigger sending new messages published to the availability SNS topic.

Answer: D Explanation: https://aws.amazon.com/blogs/database/cross-region-automatic-disaster-recovery-on-amazon-rds-for-oracle-database-using-db-snapshots-and-aws-lambda/   NEW QUESTION 55 A DevOps Engineer just joined a new company that is already running workloads on Amazon EC2 instances. AWS has been adopted incrementally with no central governance. The Engineer must now assess how well the existing deployments comply with the following requirements: *EC2 instances are running only approved AMIs. *Amazon EBS volumes are encrypted. *EC2 instances have an Owner tag. *Root login over SSH is disabled on EC2 instances. Which services should the Engineer use to perform this assessment with the LEAST amount of effort? (Select TWO.)

• A. AWS System Manager
• B. AWS Config
• C. Amazon Inspector
• D. Amazon GuardDuty
• E. AWS Directory Service

Answer: B,C Explanation: Explanation https://docs.aws.amazon.com/jajp/inspector/latest/userguide/inspectorsecurity-best-practices.html   NEW QUESTION 56 ......