Which of the following answers is the least likely reason for an engineer to choose to use
route redistribution?

A.
To exchange routes between merged companies

B.
To give separate control over routing to different parts of one company

C.
To support multiple router vendors

D.
To knit together an OSPF area if the area becomes discontiguous

Explanation:
The three incorrect answers list typical reasons for using route redistribution. The correct
answer—the least likely reason among the answers for using route redistribution— lists a
problem for which an OSPF virtual link is often useD. Route redistribution could be
attempted to solve a problem with a discontiguous OSPF area, but the redistribution
completely changes the LSAs that would have otherwise been known and could have
negative impacts on route summaries and cause routing loops, and have other problems as
well.