Which device simply acts as a multiport signal repeater, copying incoming bits blindly out to all other ports without reading any address headings? MCQ with Answer and Explanation
Which device functions exclusively at the physical layer of the OSI model to amplify or regenerate weak electrical or optical network signals over extended distances?
Explanation:
127.0.0.1 is the standard loopback address. It lets a device route diagnostic traffic back through its internal software layer without hitting physical network lines.
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