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Pure IPsec protects unicast IP traffic well, but it does not natively carry multicast or broadcast traffic across sites in the way routing protocols and some legacy services may require. GRE can encapsulate many traffic types, including multicast, inside a unicast tunnel. When GRE is combined with IPsec, GRE provides the tunnel that can carry multicast traffic and IPsec provides encryption and integrity protection for the GRE packets. This is why GRE over IPsec is a common design when encrypted site-to-site connectivity must also support routing protocol hellos or multicast-dependent control traffic. ISATAP is an IPv6 transition mechanism, not the answer for encrypted multicast between remote sites. GRE alone carries the traffic but does not encrypt it. Cisco CCNA 200-301 v1.1 Security Fundamentals expects candidates to understand the division of labor: GRE encapsulates; IPsec secures. Therefore, the mechanism that carries multicast between remote sites and supports encryption is GRE over IPsec.

The verified answer is A and D. Automation improves network management by collecting data for baselines and onboarding new devices with less manual work. In SDN and controller-based environments, telemetry and automated workflows reduce repetitive CLI work and improve consistency. Cisco CCNA 200-301 v1.1 places this skill in Automation and Programmability, where the exam expects a working understanding of how the feature behaves on real Cisco networks, not just a memorized command. The answer set overstates AI prevention and proprietary APIs; useful automation is mainly repeatable provisioning, validation, telemetry, and analysis. In production, this distinction matters because a misapplied command or design choice usually creates an outage, a security gap, or unnecessary troubleshooting noise. The correct choice matches the control-plane, data-plane, wireless, security, or services behaviour described in the scenario and should be preferred over options that merely sound related.

The verified answer is C and D. RSTP uses discarding, learning, and forwarding port states. Compared with classic STP, RSTP removes the separate listening and blocking names and converges more quickly through proposal and agreement behaviour. Cisco CCNA 200-301 v1.1 places this skill in Network Access, where the exam expects a working understanding of how the feature behaves on real Cisco networks, not just a memorized command. Listening and blocking are associated with 802.1D terminology, and speaking is not an RSTP port state. In production, this distinction matters because a misapplied command or design choice usually creates an outage, a security gap, or unnecessary troubleshooting noise. The correct choice matches the control-plane, data-plane, wireless, security, or services behaviour described in the scenario and should be preferred over options that merely sound related.

Use C for this item. Using one badge to let multiple employees enter a building is a physical access control violation. Badge readers, locks, turnstiles, guards, and visitor procedures are meant to identify and authorize each person entering a protected facility. In Cisco CCNA 200-301 v1.1, Security Fundamentals questions frequently test the practical boundary between similar features: what the feature does, where it is configured, and what problem it is meant to solve. Network authorization and intrusion detection are logical controls, and user awareness is training rather than the violated access-control mechanism itself. A clean way to validate the answer is to map the wording of the scenario to the actual device function. If the feature supplies addressing, forwarding, authentication, trunking, route selection, or controller communication, the answer must match that function exactly rather than a nearby protocol name.