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

During high-traffic periods
In an improperly implemented redundant topology
When upper-layer protocols require high reliability
After broken links are reestablished

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Computer Networking
Demodulation is a process of

performing data description.
multiplexing various signals into one high speed line signals
converting analog to digital signals
converting digital to analog signals

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