Discussion
Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
1.Switch
2.NIC
3.Hub
4.Repeater
5.RJ45 transceiver
Answer: C
Correct answer: 3 and 4
A hub and a repeater both work at the physical layer: they regenerate and retime the signal so it can travel further, extending the reach of a single segment without dividing it. A switch is a layer 2 device and creates separate collision domains rather than enlarging one; a network card is an endpoint; and a transceiver converts between media rather than extending the distance.
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