Which feature allows for dynamic IP address allocation in an NSX-T environment?

Dynamic IP address allocation in an NSX-T environment is achieved through the use of DHCP Relay. This feature enables NSX-T to forward DHCP requests from virtual machines to a DHCP server, which is essential for dynamically assigning IP addresses to devices within the network. The relay acts as a conduit, ensuring that devices can obtain their IP addresses even if the DHCP server is located outside the local subnet or on a different network segment.

This capability is especially useful in cloud environments or large-scale deployments, where managing static IP assignments for numerous virtual machines can become impractical. By leveraging DHCP Relay, organizations can automate IP address provisioning, reduce administrative overhead, and maintain seamless communication and network management.

In contrast, the other options, like static IP mapping and IP address reservation, focus on assigning specific IP addresses to devices either permanently or temporarily, which does not provide the dynamic nature that DHCP Relay facilitates. NAT Configuration deals more with network address translation and does not directly involve IP address allocation mechanisms. Thus, DHCP Relay is the correct choice for achieving dynamic IP address allocation within an NSX-T environment.