Which Cisco technology addresses management and performance concerns in a data centre by directly mapping VMs to virtual ports managed by a physical switch?

VSD (Virtual Switch Domain) is not a widely recognized Cisco technology that directly maps VMs to physical switch ports in this specific manner; it might refer to virtual switch concepts but not this direct integration.

Cisco VM-FEX (Virtual Machine Fabric Extender) is a technology designed to simplify the server access layer by extending the network fabric to virtual machines. It enables a physical switch (like a Cisco Nexus 5000 or 2000 Series) to manage virtual machine network connections directly, effectively eliminating the need for a software-based virtual switch within the hypervisor. This direct mapping of VMs to physical switch ports reduces complexity, improves performance by minimizing hypervisor overhead, and provides consistent network policy enforcement across physical and virtual environments.

AVS (Application Virtual Switch) is a Cisco virtual switch integrated with ACI, providing advanced features for VMs but not the direct physical switch port extension like VM-FEX.

SVM (Storage Virtual Machine) is a concept related to storage virtualization, particularly NetApp, and is unrelated to mapping VMs to network switch ports.