Design High-Performing Architectures Practice Question

Question

For a data lake, an architect is reviewing Lambda concurrency requirement set 19. Which design choice best fits the requirement while following AWS architectural best practices?

Answer choices

1. A. Place all components on a single large instance to simplify troubleshooting.
2. B. Use long-lived access keys in application configuration so services can call AWS APIs directly.
3. C. Disable monitoring until the workload reaches steady production traffic.
4. D. Use reserved concurrency to protect downstream systems and provisioned concurrency to reduce cold starts.

Correct Answer

D. Use reserved concurrency to protect downstream systems and provisioned concurrency to reduce cold starts.

Explanation

The best answer applies Lambda concurrency: use reserved concurrency to protect downstream systems and provisioned concurrency to reduce cold starts. The other options increase operational risk, weaken security, or remove observability that an AWS Solutions Architect should preserve.

Question details

• Difficulty: hard
• Domain: Design High-Performing Architectures
• Objective: Lambda concurrency

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