Company XYZ wants to prevent switch loops caused by unidirectional point-point-link condition on Rapid PVST + and MST. Which technology can be used in the design to meet this requirement?

BPDU Guard shuts down a PortFast-enabled access port if any BPDU is received, protecting against rogue switch connections - it does not address unidirectional link failures on uplinks.

Bridge Assurance works by sending BPDUs on all operational ports, including designated and root ports, and expects to receive BPDUs in return on each port. If a unidirectional link condition causes BPDUs to stop being received, Bridge Assurance moves that port into an inconsistent (blocking) state, preventing a switching loop from forming. It is specifically designed for Rapid PVST+ and MST on point-to-point links.

MSTP (Multiple Spanning Tree Protocol) is a spanning tree variant for mapping VLANs to instances, not a mechanism to detect or recover from unidirectional link conditions.

TRILL (Transparent Interconnection of Lots of Links) is a Layer 2 routing protocol designed to replace STP in large data centers and is unrelated to protecting Rapid PVST+ or MST from unidirectional links.