正解:B
Cisco DNA Center is a comprehensive network management and command center for enterprise networks, providing centralized management, automation, security, and policy enforcement across both wired and wireless networks.
Cisco ACI: Primarily focuses on data center automation and policy enforcement.
Cisco DNA Center: Provides organization-wide automation, security, and policy enforcement capabilities for both wired and wireless networks.
Cisco Umbrella: Offers cloud security services.
Cisco SD-WAN: Focuses on software-defined wide-area networking solutions.
Cisco DNA Center is designed to bring agility and operational efficiency across the entire enterprise network by leveraging advanced automation and assurance capabilities.