Which description of the Cisco AVS is true ?

While AVS utilizes policies, stating it 'supports individual interface policies' is too generic; option B provides specific, advanced interface policies that distinguish AVS capabilities.

The Cisco AVS, a distributed virtual switch designed for ACI, provides robust support for advanced interface policies critical for virtual environments. These capabilities include Port Channel (PC) and Virtual Port Channel (VPC) for link aggregation and redundancy, MAC pinning for consistent VM placement, and FEX (Fabric Extender) interface policies, allowing flexible connectivity and integration with physical infrastructure.

The AVS itself is a network device and integrates with APIC; it does not 'implement the device package for control plane communication' as device packages are used by APIC to manage physical devices.

In 'No Local Switching' mode, AVS typically forwards all traffic to upstream leaf switches primarily using VXLAN encapsulation, and VLAN encapsulation is generally not used for the virtualization overlay in this mode.