What is a characteristic of the PrivateArk Server service?

The PrivateArk Server service is designed to require a restart after configuration changes are made to take effect. This is an important characteristic because it ensures that any updates to authentication settings or other configurations are properly loaded and implemented. When configurations are changed, components within the service need to initialize with the new settings, which necessitates a restart. This process helps prevent errors that could arise from having outdated configuration data still in use during operation.

While the other options address aspects related to authentication handling and configuration, they do not encapsulate this critical operational requirement.