A network engineer must design a data center network with four Cisco Nexus 7706 switches. The switches will be installed in primary and secondary data centers in vPC domains. The two data centers must

Dual-sided single vPC would imply a single vPC domain stretching across two data centers, which is not the standard highly available design for independent vPC domains in each DC.

Single-sided dual vPC would imply a single data center with two independent vPC domains, which does not address the inter-data center connectivity requirement.

The dual-sided dual vPC deployment model connects two pairs of Nexus switches (each forming a vPC domain, typically one per data center) using a vPC between the sites. This design provides maximum redundancy by allowing Layer 2 links to be active on all paths, leveraging port-channels and avoiding STP blocked ports.

Single-sided single vPC would imply a single data center with a single vPC domain, which does not address the inter-data center connectivity requirement.