A company is planning to connect its 30 sites with a VPLS WAN backbone. A router at each site
should establish neighborships with all other routers using the OSPF routing protocol. Which
three points must be considered regarding DR and BDR when different router platforms are
used? (Choose three.)

A.
It is a best practice that the routers with the most powerful hardwareshould take the role of
the DR and BDR.

B.
If the IP OSPF priority is the same for all routers, the highest loopback IP address and router
ID will decide which routers will take the DR and BDR role during the selection process.

C.
Toselect the DR and BDR, the IP OSPF priority must be set to a higher value than the default
value at the DR and BDR during the selection process.

D.
Toselect the DR and BDR, the IP OSPF priority must be set to a lower value than the default
value at the DR and BDR during the selection process.

E.
The role for the DR and BDR will be selected when a new OSPF router comes up.

F.
Toforce two routers to become a DR and a BDR, the IP OSPF priority can be set to zero at all
other OSPF routers.