What must be licensed and enabled on a virtual machine for the Deep Security Notifier to function?

The correct answer is the Anti-Malware Protection Module. This module is essential for the Deep Security Notifier to function because it provides the necessary capabilities to monitor and manage security events related to malware threats. The Notifier relies on the data and alerts generated by this module to keep administrators informed about potential malicious activity on the virtual machine.

The Deep Security Agent, while important for the overall operation of Deep Security, does not independently ensure the notifier's functionality; it collects and sends data to the management console. The Network Introspection Service performs a distinct role related to network traffic and its inspection, rather than directly contributing to notification functionalities. The vCenter Server is primarily a management platform for virtualized environments and does not directly provide security services or notifications for the Deep Security components. Thus, the Anti-Malware Protection Module is specifically designed to work with the notifier for effective security notifications.