Cisco DNA Center device management can deploy a network more quickly than traditional campus device management. Automation questions require separating controller roles, API direction, data formats, HTTP behavior, and configuration-management tooling. Cisco CCNA 200-301 v1.1 includes this topic under Automation and Programmability, so the answer must be validated against normal Cisco device behavior and the operational wording of the scenario. The key is not simply recognizing a familiar acronym; it is identifying what the feature does, where it is configured, and what result it produces. The incorrect options mix northbound and southbound communication, confuse data serialization with transport, or describe traditional device-by-device management. In a real network, selecting the wrong option would either leave the feature nonfunctional, create a forwarding or security gap, or send troubleshooting in the wrong direction. The selected answer is the only one that matches the stated requirement and the way Cisco switching, routing, services, security, wireless, or automation functions are expected to operate. This is why the verified answer remains the best technical choice for the question.

802.1x. The scenario should be solved by matching the described behavior to the Cisco feature that actually performs it. Cisco CCNA 200-301 v1.1 includes this topic under Security Fundamentals, so the answer must be validated against normal Cisco device behavior and the operational wording of the scenario. The key is not simply recognizing a familiar acronym; it is identifying what the feature does, where it is configured, and what result it produces. The other options are real networking terms or plausible phrases, but they operate at a different layer, solve a different problem, or do not create the outcome described. In a real network, selecting the wrong option would either leave the feature nonfunctional, create a forwarding or security gap, or send troubleshooting in the wrong direction. The selected answer is the only one that matches the stated requirement and the way Cisco switching, routing, services, security, wireless, or automation functions are expected to operate. This is why the verified answer remains the best technical choice for the question.

Answer B,E is correct: B. Topology changes are occurring within spanning-tree; E. The forwarding table has overflowed. A switch floods frames when it does not have a usable destination MAC entry. Spanning-tree topology changes can flush or age MAC table entries, forcing unknown-unicast flooding until the switch relearns addresses. A forwarding table overflow, including a CAM table overflow attack, also causes flooding because the switch cannot maintain complete MAC-to-port mappings. A defective patch cable usually causes physical errors, CRCs, or link instability, not ordinary frame flooding. Globally configured port security is not itself a flooding trigger. Cisco CCNA 200-301 v1.1 Network Access tests this because excessive flooding can look like a performance problem while the root cause is Layer 2 learning instability. The corrected choices are topology changes and forwarding-table overflow.

Explanation:
Cisco CCNA 200-301 v1.1 Network Fundamentals questions of this type test whether each item is matched to the technology that actually performs that role. The reliable method is to classify each term by operating layer, packet behavior, management function, or security purpose before matching it. Several terms in these items are legitimate Cisco networking concepts, but they become wrong when assigned to the wrong protocol or plane. The mapping retained in the document follows that separation: transport behavior is matched to TCP or UDP, wireless or security terms are matched to their mechanisms, and automation items are matched to the correct API or management model. This matters operationally because troubleshooting fails quickly when a forwarding-plane function is treated as a management-plane feature or when a security control is applied to the wrong threat. The shown mapping is therefore retained as the verified response.

to monitor and manage network devices using a UDP underlay that operates on the application layer. Security questions require separating secure protocols, insecure management, authentication, authorization, accounting, and threat-prevention controls. Cisco CCNA 200-301 v1.1 includes this under IP Services, 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. The distractors either use weaker controls or protect a different part of the system.
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.