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Which of the following helps prevent routing loops?

Which of the following helps prevent routing loops?

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A.
Routing table

B.
Default gateway

C.
Route summarization

D.
Split horizon

Explanation:
Routing loops occur when the routing tables on the routers are slow to update and a redundant communication cycle is created between routers. Split horizon, which
prevents the router from advertising a route back to the other router from which it was learned, can be used to resist routing loops. Poison reverse, also known as
split horizon with poison reverse, is also used to resist routing loops.

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