ARPs are used on local networks to map IPv4 addresses to MAC addresses.

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Multiple Choice

ARPs are used on local networks to map IPv4 addresses to MAC addresses.

Explanation:
On local networks, devices must translate an IP address into a MAC address to actually send a frame. ARP provides that translation for IPv4. When a host wants to deliver an IP packet to another device on the same LAN and doesn’t know its MAC, it broadcasts an ARP request asking “Who has this IP? Tell me your MAC.” The device with that IP replies with its MAC address, and the requester caches this mapping for future use. The next frame is then sent using that MAC in the Ethernet header. This mechanism stays within the local network segment; routers rely on ARP on each hop to reach the next device. IPv6 uses a different method (Neighbor Discovery) rather than ARP. So, the statement is true.

On local networks, devices must translate an IP address into a MAC address to actually send a frame. ARP provides that translation for IPv4. When a host wants to deliver an IP packet to another device on the same LAN and doesn’t know its MAC, it broadcasts an ARP request asking “Who has this IP? Tell me your MAC.” The device with that IP replies with its MAC address, and the requester caches this mapping for future use. The next frame is then sent using that MAC in the Ethernet header. This mechanism stays within the local network segment; routers rely on ARP on each hop to reach the next device. IPv6 uses a different method (Neighbor Discovery) rather than ARP. So, the statement is true.

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