| Exam 642-885 | Question id=3361 | IPv6 in a Service Provider IP NGN Environment |
What is enabled by default on Cisco IOS-XR routers and cannot be disabled?
| A. |
SSH server | |
| B. |
Multicast routing | |
| C. |
IPv4 and IPv6 CEF | |
| D. |
IPv6 routing | |
| E. |
CDP | |
| F. |
BFD |