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Traffic crosses an internal to external network boundary. That does not establish the requirement is a direct two-endpoint link.

The network is small enough to combine core and distribution roles. That does not establish the requirement is a direct two-endpoint link.

Pairwise full mesh grows links quadratically with site count. That does not establish the requirement is a direct two-endpoint link.

Deploying a point-to-point link sized for the distance and throughput would not meet the need for collapsed-core distribution design.

Enforcing intra-data-center segmentation on service-to-service flows would not meet the need for collapsed-core distribution design.

Choosing a scalable hub-spoke or SD-WAN overlay where policy and traffic fit would not meet the need for collapsed-core distribution design.

Measure throughput and round-trip latency between the buildings. That check cannot demonstrate a correctly negotiated and collecting/distributing link aggregation.

Positive and negative tests confirm internal segmentation. That check cannot demonstrate a correctly negotiated and collecting/distributing link aggregation.

Measure leaf-to-leaf throughput and failover across spines. That check cannot demonstrate a correctly negotiated and collecting/distributing link aggregation.

The requirement is a direct two-endpoint link. That does not establish the network is small enough to combine core and distribution roles.

Internal lateral paths require east-west controls. That does not establish the network is small enough to combine core and distribution roles.

The sole central switching point is a single point of failure. That does not establish the network is small enough to combine core and distribution roles.

Deploying a point-to-point link sized for the distance and throughput would not apply egress inspection and perimeter policy for north-south flows.

Enforcing intra-data-center segmentation on service-to-service flows would not apply egress inspection and perimeter policy for north-south flows.

Using a redundant collapsed-core design with clear access-layer uplinks would not apply egress inspection and perimeter policy for north-south flows.

Measure throughput and round-trip latency between the buildings. That check cannot demonstrate the defined inbound-versus-return session policy.

Positive and negative tests confirm internal segmentation. That check cannot demonstrate the defined inbound-versus-return session policy.

Measure leaf-to-leaf throughput and failover across spines. That check cannot demonstrate the defined inbound-versus-return session policy.

Applying egress inspection and perimeter policy for north-south flows would not enforce intra-data-center segmentation on service-to-service flows.

Using a redundant collapsed-core design with clear access-layer uplinks would not enforce intra-data-center segmentation on service-to-service flows.

Deploying a point-to-point link sized for the distance and throughput would not enforce intra-data-center segmentation on service-to-service flows.

Stateful firewalls can distinguish permitted connection initiation from return traffic. That check cannot demonstrate try approved service paths and deny unauthorized lateral access.

LACP forms a logical link only when partner identities and member parameters agree. Verification of this result involves try approved service paths and deny unauthorized lateral access.

Cost and reachability evidence validate topology choice. That check cannot demonstrate try approved service paths and deny unauthorized lateral access.

The network is small enough to combine core and distribution roles.

Traffic crosses an internal to external network boundary.

Pairwise full mesh grows links quadratically with site count.

Renumber or implement a deliberate temporary translation plan for the overlapping networks would not meet the need for an appropriate nonoverlapping RFC1918 subnet such as 10.44.0.0/16.

Allocate /25, /26 and /28 blocks largest-first with no overlap would not meet the need for an appropriate nonoverlapping RFC1918 subnet such as 10.44.0.0/16.

Choosing a valid unicast host IP within the assigned subnet would not meet the need for an appropriate nonoverlapping RFC1918 subnet such as 10.44.0.0/16.

Test uniquely translated destinations from each site and inspect routes. It does not inspect internal addressing and confirm no unintended overlap with routed WAN prefixes.

A real unicast address gives a valid host target. It does not inspect internal addressing and confirm no unintended overlap with routed WAN prefixes.

Nonoverlapping ranges with sufficient hosts validate VLSM. It does not inspect internal addressing and confirm no unintended overlap with routed WAN prefixes.