Which of the following features work the same in both RIP-2 and RIPng?

Which of the following features work the same in both RIP-2 and RIPng? (Choose three.)

A.
Distance Vector Logic

B.
Uses UDP

C.
Uses RIP-specific authentication

D.
Maximum useful metric of 15

E.
Automatic route summarization

Explanation:
RIP-2 and RIPng both use UDP, both use Distance Vector logic, and both use the same
metric, with the same maximum (15) and same metric that means infinity (16). RIPng does

not perform automatic route summarization because IPv6 has no concept of a classful
network. RIPng also uses the built-in IPv6 authentication mechanisms, rather than a RIPspecific authentication such as RIP-2.