Answer D and E is the technically correct selection. Cisco WLC service-port management supports Telnet and SSH access. The service port is an out-of-band management interface and can be used for direct management connectivity depending on platform configuration. This aligns with Cisco CCNA 200-301 v1.1 because the exam blueprint requires engineers to recognize operational behaviour from configuration symptoms and topology requirements. RADIUS and TACACS+ are AAA protocols, and SCP is file transfer, not the pair of management access protocols asked here. Treat the distractors carefully: most are real Cisco terms, but they solve a different problem or operate at a different layer. The selected answer is the one that would be used by an engineer on the device or in the design to produce the outcome stated in the question.