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In which circumstance are multiple copies of the same unicast frame likely to be transmitted in a switched LAN?

High traffic and virus activity could give you the same result, this is a bad question and worse anwer. To many variables that are not considered.Improperly implemented redundant topology, screams vague and unclear!!!

A. During high-traffic periods

B. After broken links are reestablished

C. When upper-layer protocols require high reliability

D. In an improperly implemented redundant topology


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