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单选题

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

发布日期:2021-03-17

In which circumstance are multiple copies of the s...
A

during high traffic periods

B

after broken links are re-established

C

when upper-layer protocols require high reliability

D

in an improperly implemented redundant topology

E

when a dual ring topology is in use

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