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.
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