Which parameter would you tune to affect the selection of a static route as a backup, when a
dynamic protocol is also being used?

A.
hop count

B.
administrative distance

C.
link bandwidth

D.
link delay

E.
link cost

Explanation:
What Is Administrative Distance?
http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080094195.shtml
Administrative distance is the feature that routers use in order to select the best path.
Administrative distance defines the reliability of a routing protocol. Each routing protocol is
prioritized in order of most to least reliable (believable) with the help of an administrative distance
value. Lowest Administrative distance will be chosen first.