Refer to the exhibit. Which option accurately describes the infrastructure?

This option incorrectly identifies X as spine nodes and Y as leaf nodes, reversing their roles; in ACI, leaf nodes are at the edge connected to endpoints and spine nodes are in the core. Z also refers to the entire ACI fabric, not just a Fabric Interconnect layer.

This option incorrectly identifies X as spine nodes and Y as leaf nodes, reversing their fundamental roles in an ACI fabric's spine-leaf architecture.

In a Cisco ACI spine-leaf architecture, X represents the leaf nodes which connect directly to servers and other network devices, while Y represents the spine nodes which serve as the high-speed, non-blocking backbone connecting all leaf nodes. The entire interconnected network of leaf and spine switches, managed by the APIC, forms the Cisco ACI fabric, designated as Z.

This option uses terms like "collapsed backbone nodes" and "access nodes" which are associated with traditional network designs, rather than the specific "spine" and "leaf" terminology used in Cisco ACI.