Comprehensive and Detailed Explanation with Exact Extracts:

Option A (TRUE): VTEPs (VXLAN Tunnel Endpoints) are deployed flexibly.

Extract from Nokia VXLAN Configuration Guide:

"VTEPs can reside on hypervisors (virtual switches), leaf routers (network-based overlays), or data center gateways (for inter-fabric connectivity)."

Option B (TRUE): EVPN is the control plane for VXLAN.

Extract from Nokia EVPN-VXLAN Integration Guide:

"EVPN route types (e.g., Type 2 MAC/IP, Type 3 Inclusive Multicast) are exchanged between VTEPs to establish forwarding semantics for the VXLAN overlay."

Option C (FALSE): The VNI (VXLAN Network Identifier) is not automatically assigned per VTEP.

Extract from Nokia SR Linux Fundamentals Guide (Section: VXLAN):

"The VNI is a manually configured 24-bit segment ID per Layer 2 domain (or VRF for L3VNI). A single VTEP handles multiple VNIs simultaneously. VTEPs are identified by IP addresses, not VNIs."

Option D (TRUE): VXLAN enables L2 extension over IP underlays.

Extract from Nokia Data Center Design Guide:

"VXLAN encapsulation provides Layer 2 connectivity between workloads (e.g., VMs, containers) across a routed underlay network."