Design Cost-Optimized Architectures Flashcards
Both historical records and frequently accessed data are stored on an on-premises storage system. The amount of current data is growing at an exponential rate. As the storage’s capacity is nearing its limit, the company’s Solutions Architect has decided to move the historical records to AWS to free up space for the active data.
Which of the following architectures deliver the best solution in terms of cost and operational management?
A. Use AWS Storage Gateway to move the historical records from on-premises to AWS. Choose Amazon S3 Glacier to be the destination for the data. Modify the S3 lifecycle configuration to move the data from the Standard tier to Amazon S3 Glacier Deep Archive after 30 days.
B. Use AWS DataSync to move the historical records from on-premises to AWS. Choose Amazon S3 Glacier Deep Archive to be the destination for the data.
C. Use AWS Storage Gateway to move the historical records from on-premises to AWS. Choose Amazon S3 Glacier Deep Archive to be the destination for the data.
D. Use AWS DataSync to move the historical records from on-premises to AWS. Choose Amazon S3 Standard to be the destination for the data. Modify the S3 lifecycle configuration to move the data from the Standard tier to Amazon S3 Glacier Deep Archive after 30 days.
The correct answer is B - Use AWS DataSync to move the historical records from on-premises to AWS. Choose Amazon S3 Glacier Deep Archive to be the destination for the data.
A and C are incorrect because Storage Gateway is not suitable for transferring large sets of data to AWS.
D is incorrect and A also again because you don’t have to configure the S3 lifecycle policy and wait for 30 days to move the data to Glacier Deep Archive.
Which of the following statements is true regarding EC2 billing? (Select Two)
A. You will be billed when your On-Demand instance is in pending state.
B. You will be billed when your Spot instance is preparing to stop with a stopping state.
C. You will be billed when your On-Demand instance is preparing to hibernate with a stopping state.
D. You will be billed when your Reserved instance is in terminated state.
E. You will not be billed for any instance usage while an instance is not in the running state.
The correct answer is C and D.
C - You will be billed when your On-Demand instance is preparing to hibernate with a stopping state.
D - You will be billed when your Reserved instance is in terminated state.
A company has established a dedicated network connection from its on-premises data center to AWS Cloud using AWS Direct Connect (DX). The core network services, such as the Domain Name System (DNS) service and Active Directory services, are all hosted on-premises. The company has new AWS accounts that will also require consistent and dedicated access to these network services.
Which of the following can satisfy this requirement with the LEAST amount of operational overhead and in a cost-effective manner?
A. Set up another Direct Connect connection for each and every new AWS account that will be added.
B. Set up a new Direct Connect gateway and integrate it with the existing Direct Connect connection. Configure a VPC peering connection between AWS accounts and associate it with Direct Connect gateway.
C. Create a new AWS VPN CloudHub. Set up a Virtual Private Network (VPN) connection for additional AWS accounts.
D. Create a new Direct Connect gateway and integrate it with the existing Direct Connect connection. Set up a Transit Gateway between AWS accounts and associate it with the Direct Connect gateway.
The correct answer is D - Create a new Direct Connect gateway and integrate it with the existing Direct Connect connection. Set up a Transit Gateway between AWS accounts and associate it with the Direct Connect gateway.
B is incorrect because VPC peering does not support transitive peering relationships.
C is incorrect because a VPN connection is not capable of providing consistent and dedicated access to the on-premises network services.
