Route redistribution (RR) has become an integral part of IP network design as the result of a
growing need for disseminating certain routes across routing protocol boundaries. By
default, which description is true when redistributing routes from other routing protocols into
OSPF?

A.
Summarized routes are unacceptable.

B.
They will appear in the OSPF routing table as type E2 routes.

C.
Only routes with lower administrative distances will be imported.

D.
All imported routes are to be automatically summarized if possible.

Explanation:
The point of this question is OSPF route redistribution.
When redistributing routes from other routing protocols into OSPF, there is a default cost
value 20 displaying in the OSPF routing table, it’s type E2 route, it’s unaltered. In opposite,
type El route is alterable. So option B is correct answer.