| Exam 642-887 | Question id=3273 | MPLS/LDP in a Service Provider IP NGN Environment |
An LDP session is established between two neighbors. Over which protocol and port number do they maintain their adjacency?
| A. |
TCP 711 | |
| B. |
UDP 646 | |
| C. |
UDP 711 | |
| D. |
TCP 646 |