AWS Certified Solutions Architect – Associate (SAA-C02) — Question 145

A solutions architect must create a highly available bastion host architecture. The solution needs to be resilient within a single AWS Region and should require only minimal effort to maintain.
What should the solutions architect do to meet these requirements?

Answer options

• A. Create a Network Load Balancer backed by an Auto Scaling group with a UDP listener.
• B. Create a Network Load Balancer backed by a Spot Fleet with instances in a partition placement group.
• C. Create a Network Load Balancer backed by the existing servers in different Availability Zones as the target.
• D. Create a Network Load Balancer backed by an Auto Scaling group with instances in multiple Availability Zones as the target.

Correct answer: D

Explanation

Option D is correct because using an Auto Scaling group with instances across multiple Availability Zones provides the necessary resilience and high availability. Options A and B do not offer the same level of resilience or are not optimal for this use case, while Option C lacks the dynamic scaling capabilities that an Auto Scaling group offers.