What is the purpose of Split Horizon?
A.) It prevents the regular update messages from reinstating
a route
that has gone down
B.) Information received on an interface cannot be sent back
out the
same interface
C.) Informs all neighbor routers that two routes exist
D.) Tells the router the destination is unreachable
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Answer: B
Split Horizon - If you learn a protocol?s route on an
interface, do not
send information about that route back out that interface.
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CCNA 
