Which feature can be altered by installing a plug-in to the vSphere Web Client?

The vSphere Web Client interface can be altered by installing a plug-in because plug-ins are designed to extend the functionality and features of the web client. They allow for customization of the user interface, enabling the addition of new features, tools, or integrations that enhance the overall experience for users managing their VMware environments. This capability is an essential aspect of the vSphere platform, as it provides flexibility and adaptability to meet the specific needs of different organizations.

In contrast, user authentication methods remain controlled by the underlying security settings and configurations within VMware vSphere and its components. Network configuration options are typically managed through the core vSphere settings and cannot be modified directly through a plug-in. Similarly, database configuration settings are part of the backend architecture and require specific procedures for changes, as they involve critical data management and storage configurations that are not influenced by front-end plug-in installations.