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Answer: Utilize Amazon Route 53 Resolver to establish DNS endpoints and set up conditional forwarding rules to manage DNS namespace resolution between the on-premises data center and the VPC.
The correct answer is C. Utilizing Amazon Route 53 Resolver to create DNS endpoints and adding conditional forwarding rules is the most efficient solution with the least administrative overhead. This method seamlessly integrates the VPC with the on-premises DNS infrastructure, allowing the VPC applications to resolve DNS queries without the need for additional EC2 instances or complex configurations. It leverages AWS-managed services to handle DNS resolution, reducing maintenance burdens and ensuring high availability and scalability.
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A company is transitioning its mobile banking applications to operate on Amazon EC2 instances within a VPC. These applications require DNS resolution to an on-premises Active Directory domain, which is accessible via an AWS Direct Connect link. What is the most efficient solution with minimal administrative effort to facilitate this DNS resolution?
A
Deploy a pair of EC2 instances in two different Availability Zones within the VPC to act as caching DNS servers for resolving queries from the application servers.
B
Set up an Amazon Route 53 private hosted zone and configure it with NS records directing to the on-premises DNS servers.
C
Utilize Amazon Route 53 Resolver to establish DNS endpoints and set up conditional forwarding rules to manage DNS namespace resolution between the on-premises data center and the VPC.
D
Launch a new Active Directory domain controller in the VPC and establish a bidirectional trust relationship with the existing on-premises Active Directory domain.
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