Which networking utility uses ICMP echo requests to verify if a remote host target is online and measure round-trip network response times? MCQ with Answer and Explanation
Which hardware device works at Layer 1 of the OSI model to repeat network traffic across all ports, making all connected hosts share a single collision domain?
Explanation:
A network hub acts as a simple Layer 1 repeater, broadcasting incoming data to all connected ports and placing them in a single collision domain.
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