Answer Posted / zgeorgem

i am sorry but my previous answer might be wrong... gateways
ARE actual devices

Definition
Gateways:
They relay packets among networks that have different
protocols (e.g. between a LAN and a WAN). They accept a
packet formatted for one protocol and convert it to a packet
formatted for another protocol before forwarding it. They
operate in all seven layers of the OSI model.

So i think the answer is C
Sorry once again

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