Which of the following is true regarding VMware vDefend security solutions?

VMware vDefend (NSX Security) solutions, particularly the Distributed Firewall (DFW) and Distributed IDS/IPS, are built on a scale-out architecture. Security enforcement is performed directly in the hypervisor kernel on every host that runs workloads. As more hosts are added to the data center, the aggregate security capacity (e.g., firewall throughput, inspection capability) increases proportionally. This provides linear scalability without the traffic hair-pinning and bottlenecks associated with traditional centralized security appliances.

B. Control is centralized through the NSX Manager, which provides a single point of policy management, while the data plane enforcement is distributed.
C. vDefend is a component of a defense-in-depth strategy and does not eliminate the need for other security controls like endpoint protection or SIEM.
D. VMware vDefend (NSX) can be deployed in a vSphere environment without requiring the full VMware Cloud Foundation (VCF) stack.

1. VMware NSX-T Data Center Documentation, "NSX-T Data Center Product Page," Section: Key Capabilities. "Scale-out performance: Firewalling is distributed to every workload, delivering maximum throughput and minimum latency. Firewall capacity scales linearly as hosts are added."

2. VMware NSX-T Reference Design Guide, Chapter 2: NSX-T Architecture, Section: Distributed Firewall. The guide explains how the DFW is implemented in the hypervisor of each host, which is the basis for its scale-out nature.