About this interactive
The lesson's line between the two:
- **NIC:** connects its own device to a network, and the device processes the traffic that comes through it. The lesson shows a four-port 10 gig server card with SFP slots, a laptop's wireless card, a NIC built into a motherboard, and a router's T1 card and built-in Ethernet ports.
- **Switch port:** the switch is not connecting itself to the network; it interconnects the devices on it, looking only at Layer 2 information. Its ports are not called NICs, however many it has.
An SFP slot can be on either: what matters is the device it belongs to.
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