Cisco ENCOR Practice Exam 2026 – All-in-One Comprehensive Guide to Mastering Enterprise Network Core Technologies!

The correct response regarding the UDP port utilized for the VXLAN Control Plane relates to UDP 4789. This port is specified in the IANA service name and port number registry for VXLAN encapsulation, allowing it to manage the data plane traffic within virtual networks effectively.

Understanding the context of VXLAN, or Virtual Extensible LAN, is crucial; it is a network virtualization technology used to encapsulate Layer 2 Ethernet frames within Layer 4 UDP packets. This encapsulation is necessary to create overlay networks that can traverse Layer 3 networks, making UDP 4789 vital for VXLAN control plane communications, especially in the transmission of control information needed for establishing and maintaining VXLAN tunnels between devices.

In contrast, the other ports mentioned do not pertain to VXLAN specifications and serve different purposes in networking or are unassigned, making them unsuitable for this application. This highlights the importance of using the appropriate port for the correct protocols, ensuring proper functionality and interoperability in networking environments that utilize VXLAN technology.