IS-IS is often considered an alternative to OSPF in the IP world. Which two statements
identify similarities between IS-IS and OSPF? (Choose two.) Select 2 response(s).

A.
support for designated intermediate systems and backup designated intermediate
systems

B.
support for multiple areas per router

C.
support for classless routing

D.
support for address summarization between areas

E.
support for both DIS adjacencies and neighbor adjacencies