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NEW QUESTION 53
A company is migrating its three-tier web application from on-premises to the AWS Cloud. The company has the following requirements for the migration process:
* Ingest machine images from the on-premises environment.
* Synchronize changes from the on-premises environment to the AWS environment until the production cutover.
* Minimize downtime when executing the production cutover.
* Migrate the virtual machines' root volumes and data volumes.
Which solution will satisfy these requirements with minimal operational overhead?

  • A. Create an AWS CLIVM Import/Export script to migrate each virtual machine. Schedule the script to run incrementally to maintain changes in the application. Launch instances from the AMIs created by VM Import/Export. Once testing is done, rerun the script to do a final import and launch the instances from the AMIs.
  • B. Use AWS Application Discovery Service and AWS Migration Hub to group the virtual machines as an application. Use the AWS CLI VM Import/Export script to import the virtual machines as AMIs.
    Schedule the script to run incrementally to maintain changes in the application. Launch instances from the AMIs. After initial testing, perform a final virtual machine import and launch new instances from the AMIs.
  • C. Use AWS Server Migration Service (SMS) to upload the operating system volumes. Use the AWS CLI import-snaps hot command 'or the data volumes. Launch instances from the AMIs created by AWS SMS and attach the data volumes to the instances. After initial testing, perform a final replication, launch new instances from the replicated AMIs. and attach the data volumes to the instances.
  • D. Use AWS Server Migration Service (SMS) to create and launch a replication job for each tier of the application. Launch instances from the AMIs created by AWS SMS. After initial testing, perform a final replication and create new instances from the updated AMIs.

Answer: A

 

NEW QUESTION 54
A company ingests and processes streaming market data. The data rate is constant. A nightly process that calculates aggregate statistics is run, and each execution takes about 4 hours to complete. The statistical analysis is not mission critical to the business, and previous data points are picked up on the next execution if a particular run fails.
The current architecture uses a pool of Amazon EC2 Reserved Instances with 1-year reservations running full time to ingest and store the streaming data in attached Amazon EBS volumes. On-Demand EC2 instances are launched each night to perform the nightly processing, accessing the stored data from NFS shares on the ingestion servers, and terminating the nightly processing servers when complete. The Reserved Instance reservations are expiring, and the company needs to determine whether to purchase new reservations or implement a new design.
Which is the most cost-effective design?

  • A. Update the ingestion process to use Amazon Kinesis Data Firehose to save data to Amazon S3. Use a fleet of On-Demand EC2 instances that launches each night to perform the batch processing of the S3 data and terminates when the processing completes.
  • B. Update the ingestion process to use Amazon Kinesis Data Firehouse to save data to Amazon S3. Use AWS Batch to perform nightly processing with a Spot market bid of 50% of the On-Demand price.
  • C. Update the ingestion process to use a fleet of EC2 Reserved Instances behind a Network Load Balancer with 3-year leases. Use Batch with Spot instances with a maximum bid of 50% of the On-Demand price for the nightly processing.
  • D. Update the ingestion process to use Amazon Kinesis Data Firehose to save data to Amazon Redshift.
    Use an AWS Lambda function scheduled to run nightly with Amazon CloudWatch Events to query Amazon Redshift to generate the daily statistics.

Answer: D

 

NEW QUESTION 55
An organization has setup RDS with VPC. The organization wants RDS to be accessible from the internet. Which of the below mentioned configurations is not required in this scenario?

  • A. The organization must setup RDS with the subnet group which has an external IP.
  • B. The organization must enable the parameter in the console which makes the RDS instance publicly accessible.
  • C. The organization must enable the VPC attributes DNS hostnames and DNS resolution.
  • D. The organization must allow access from the internet in the RDS VPC security group,

Answer: A

Explanation:
A Virtual Private Cloud (VPC) is a virtual network dedicated to the user's AWS account. It enables the user to launch AWS resources, such as RDS into a virtual network that the user has defined.
Subnets are segments of a VPC's IP address range that the user can designate to a group of VPC resources based on security and operational needs. A DB subnet group is a collection of subnets (generally private) that the user can create in a VPC and which the user assigns to the RDS DB instances. A DB subnet group allows the user to specify a particular VPC when creating DB instances. If the RDS instance is required to be accessible from the internet:
The organization must setup that the RDS instance is enabled with the VPC attributes, DNS hostnames and DNS resolution.
The organization must enable the parameter in the console which makes the RDS instance publicly accessible.
The organization must allow access from the internet in the RDS VPC security group.
http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_VPC.html

 

NEW QUESTION 56
A company wants to migrate its website from an on-premises data center onto AWS. At the same time, it wants to migrate the website to a containerized microservice-based architecture to improve the availability and cost efficiency. The company's security policy states that privileges and network permissions must be configured according to best practice, using least privilege.
A Solutions Architect must create a containerized architecture that meets the security requirements and has deployed the application to an Amazon ECS cluster.
What steps are required after the deployment to meet the requirements? (Choose two.)

  • A. Create tasks using the bridge network mode.
  • B. Apply security groups to the tasks, and pass IAM credentials into the container at launch time to access other resources.
  • C. Apply security groups to the tasks, and use IAM roles for tasks to access other resources.
  • D. Create tasks using the awsvpc network mode.
  • E. Apply security groups to Amazon EC2 instances, and use IAM roles for EC2 instances to access other resources.

Answer: C,D

Explanation:
Explanation
https://aws.amazon.com/about-aws/whats-new/2017/11/amazon-ecs-introduces-awsvpc-networking-mode-for-co
https://amazonaws-china.com/blogs/compute/introducing-cloud-native-networking-for-ecs-containers/https://doc

 

NEW QUESTION 57
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