Refer to the exhibit.
Which configuration must you apply to router R2 to enable BFD?
A.
Option A 
B.
Option B 
C.
Option C 
D.
Option D 
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None appear correct.
A. BFD correct
Static route wrong (wrong network)
B.. BFD wrong (lists itself)
Static wrong (wrong network)
C. BFD wrong (points to R1’s loopback)
Static route will work
D. BFD correct
Static route wrong (wrong next hop)
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A is correct, seems we need to understand the technology very very well ):
http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bfd/configuration/15-mt/irb-15-mt-book/irb-bi-fwd-det.html#GUID-90F19A0A-2CEA-4863-8F34-D904FCEA028D
Note that the static route on Device B exists solely to enable the BFD session between 10.201.201.1 and 10.201.201.2. If there is no useful static route that needs to be configured, select a prefix that will not affect packet forwarding, for example, the address of a locally configured loopback interface.
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