A Company Needs to Architect a Hybrid DNS Solution

question 508

Multiple Choice

A company needs to architect a hybrid DNS solution. This solution will use an Amazon Route 53 private hosted zone for the domain cloud.example.com for the resources stored within VPCs. The company has the following DNS resolution requirements: On-premises systems should be able to resolve and connect to cloud.example.com. All VPCs should be able to resolve cloud.example.com. There is already an AWS Direct Connect connection between the on-premises corporate network and AWS Transit Gateway. Which architecture should the company use to meet these requirements with the HIGHEST performance?

• A) Associate the private hosted zone to all the VPCs. Create a Route 53 inbound resolver in the shared services VPC. Attach all VPCs to the transit gateway and create forwarding rules in the on-premises DNS server for cloud.example.com that point to the inbound resolver.
• B) Associate the private hosted zone to all the VPCs. Deploy an Amazon EC2 conditional forwarder in the shared services VPC. Attach all VPCs to the transit gateway and create forwarding rules in the on-premises DNS server for cloud.example.com that point to the conditional forwarder.
• C) Associate the private hosted zone to the shared services VPC. Create a Route 53 outbound resolver in the shared services VPC. Attach all VPCs to the transit gateway and create forwarding rules in the on-premises DNS server for cloud.example.com that point to the outbound resolver.
• D) Associate the private hosted zone to the shared services VPC. Create a Route 53 inbound resolver in the shared services VPC. Attach the shared services VPC to the transit gateway and create forwarding rules in the on-premises DNS server for cloud.example.com that point to the inbound resolver.

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Definitions:

Turgor Pressure

(turgor) Hydrostatic pressure that develops within a walled cell and presses outward against the plasma membrane.

Hypotonic Solution

A solution that has a lower concentration of solutes compared to another solution, causing water to move into the cell in osmosis.

Net Movement

The overall transfer or migration of substances, such as molecules or ions, from an area of higher concentration to an area of lower concentration, often referring to processes like diffusion.

Sodium-potassium Pumps

Cellular membrane proteins that actively transport sodium out of and potassium into cells, essential for maintaining cell volume and resting membrane potential.