# Which of the following is a valid way to configure a DNS-01 challenge solver for the ACME issuer?

cert-manager, Medium (Advanced), Concepts. https://k8wiz.com/uquiz/which-of-the-following-is-a-valid-way-to-configure-a-dns-01-challenge-solver-for-the-acme-issuer

- A. Using a webhook provider
- B. Using an ingress controller
- C. Using a service mesh
- D. Using a load balancer

**Answer:** Using a webhook provider

**Explanation:** A valid way to configure a DNS-01 challenge solver for the ACME issuer is using a webhook provider. cert-manager supports various DNS providers through webhook plugins, which allow it to create the necessary DNS records for validation.