Refer to the exhibit. Which NAT type must the engineer configure for the vEdge router to bring up the data plane tunnels?

Using a 'private' color on the TLOC indicates that the transport is within a private network where NAT is typically not involved for TLOC reachability to other SD-WAN devices, and it would not help traverse internet NAT.

While Full Cone NAT is desirable for SD-WAN tunnel establishment, an engineer doesn't 'enable Full Cone NAT on the vEdge interface'; this is a property of the upstream NAT device, not a configuration on the vEdge itself.

Symmetric NAT is the most restrictive NAT type and often causes issues with SD-WAN tunnel establishment, requiring specific NAT traversal techniques, and is not something an engineer would enable on the vEdge to bring up tunnels.

When a vEdge router is deployed behind a NAT device and connected to the internet, it needs to advertise its public IP address so that other WAN Edge devices can establish tunnels to it. This is achieved by configuring the TLOC with a 'public' color, indicating that the transport is on the public internet and NAT traversal is necessary.