/128. Routing and redundancy questions are solved by applying longest-prefix match, administrative distance, metrics, and gateway-redundancy behavior in the correct order. Cisco CCNA 200-301 v1.1 includes this under Network Fundamentals, where the expected skill is selecting the feature that actually produces the requested network behavior. The wording normally gives the clue: protocol family, address scope, trunk state, route preference, security mode, API method, or controller role. Incorrect choices point to the wrong next hop, choose the wrong route source, or confuse routing with Layer 2 behavior. In production, choosing the wrong option would typically cause failed client access, a broken route, insecure management, or an automation workflow that targets the wrong interface. The selected answer is the Cisco-consistent behavior for this item.