Does the vault use DNS for hostname resolution?

The vault does not utilize DNS for hostname resolution. Instead, it relies on internal mechanisms to manage and recognize hostnames within its own environment. This design choice is aimed at enhancing security and reliability, as reliance on external DNS could introduce vulnerabilities and potential points of failure.

In many implementations, the vault administrators configure it to work with static IP addresses or host entries to ensure consistent connectivity to critical components without the variability associated with DNS. Such an approach reduces dependencies on external systems and augments the security posture by limiting exposure to DNS-based attacks.

Other options suggest varying levels of dependence on DNS which may imply a reliance that does not exist in the context of a typical CyberArk vault's architecture. Thus, the assertion that the vault does not use DNS for hostname resolution aligns accurately with the designed operational principles of CyberArk.