In which circumstance are multiple copies of the same unicast frame likely to be transmitted in a switched LAN?
A.
after broken links are re-established
B.
in an improperly implemented redundant topology
C.
when upper-layer protocols require high reliability
D.
during high traffic periods
E.
when a dual ring topology is in use
Answer: B
Explanation
If we connect two switches via 2 or more links and do not enable STP on these switches then a loop (which creates multiple copies of the same unicast frame) will occur. It is an example of an improperly implemented redundant topology.
Thanks. I fixed the correct answer B.
Confirm : B is the correct answer