What are three common characteristics of OSPF and IS-IS? (Choose three.)

A.
Both routing protocols maintain a link-state database calculated using the Dijkstra shortest path
first algorithm.

B.
Both routing protocols elect a designated router and backup designated router for a shared
LAN segment.

C.
Both routing protocols use hello packets to form and maintain adjacencies.

D.
Both routing protocols use a SHA-1 hash for authentication purposes.

E.
Both routing protocols allow for address summarization between areas.