A Company Has Developed a New Billing Application That Will

question 181

Multiple Choice

A company has developed a new billing application that will be released in two weeks. Developers are testing the application running on 10 EC2 instances managed by an Auto Scaling group in subnet 172.31.0.0/24 within VPC A with CIDR block 172.31.0.0/16. The Developers noticed connection timeout errors in the application logs while connecting to an Oracle database running on an Amazon EC2 instance in the same region within VPC B with CIDR block 172.50.0.0/16. The IP of the database instance is hard-coded in the application instances. Which recommendations should a Solutions Architect present to the Developers to solve the problem in a secure way with minimal maintenance and overhead?

• A) Disable the SrcDestCheck attribute for all instances running the application and Oracle Database. Change the default route of VPC A to point ENI of the Oracle Database that has an IP address assigned within the range of 172.50.0.0/26
• B) Create and attach internet gateways for both VPCs. Configure default routes to the Internet gateways for both VPCs. Assign an Elastic IP for each Amazon EC2 instance in VPC A
• C) Create a VPC peering connection between the two VPCs and add a route to the routing table of VPC A that points to the IP address range of 172.50.0.0/16
• D) Create an additional Amazon EC2 instance for each VPC as a customer gateway; create one virtual private gateway (VGW) for each VPC, configure an end-to-end VPC, and advertise the routes for 172.50.0.0/16

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Definitions:

Resource Based View

The resource-based view is a strategic management perspective that sees a firm's competitiveness as determined by its ability to manage and utilize its unique set of resources and capabilities.

Socially Complex

Describes situations or constructs that are characterized by intricate interpersonal relationships and dynamics, often affecting group interactions and outcomes.

Unique History

A distinct and unrepeatable sequence of past events or experiences particular to an individual, organization, or place.

IO Perspective

Stands for Industrial Organization Perspective, focusing on the behaviors, structures, and policies affecting industries, including competition and regulation.