Question at position 1 ARP protocol works at __________ layer.LinkNetworkTransportPhysical

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Question at position 1 ARP protocol works at __________ layer.LinkNetworkTransportPhysical

BlackTom AI · Accepted Answer

The question asks which layer ARP operates at in general networking models.
Option 1: Link — This is the layer associated with the data link concept in the OSI model, where ARP is typically described as operating to map IP addresses to MAC addresses on a local network segment. ARP functions to resolve a network-layer address (IP) to a link-layer address (MAC) within the same broadcast domain, which aligns with data link responsibilities.
Option 2: Network — This would involve routing and IP addressing logic, but ARP itself does not perform routing or IP-level decisions. It simply translates addresses for devices on the local link.
Option 3: Transport — The transport layer deals with end-to-end communication, port numbers, and reliability (e.g., TCP/UDP). ARP has nothing to do with those responsibilities.
Option 4: Physical — The physical layer is about the actual transmission medium and signals. ARP does not operate at the electrical or physical signaling level; it relies on the data link to carry its frames.
In summary, ARP is used to map IP addresses to MAC addresses on a local network, which is a function associated with the link (data link) layer, not the network, transport, or physical layers.

Question at position 1 ARP protocol works at __________ layer.LinkNetworkTransportPhysical

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