After a successful ARP request, what piece of information does the requesting host acquire?

After a successful ARP request, what piece of information does the requesting host acquire?

• A. The device's hostname
• B. The device's IP address
• C. The device's MAC address
• D. The device's subnet mask

Answer: (C)

After a successful Address Resolution Protocol (ARP) request, the requesting host acquires the device's MAC address. ARP is used within a local area network to translate an IP address into a MAC address, which is crucial for enabling communication over Ethernet networks. When a device wants to communicate with another device on the same local network, it uses ARP to discover the MAC address associated with the target device's IP address. The requesting host sends out an ARP request broadcast asking, "Who has this IP address?" The device that owns that IP address responds with its MAC address. This information allows the requesting host to encapsulate its data packets in a frame that can be sent to the correct hardware address on the local network. The other options, such as the device's hostname, IP address, or subnet mask, are not provided in response to an ARP request. While a device might have a hostname and an IP address, ARP specifically focuses on mapping the IP address to the MAC address for the purpose of communication at the data link layer. The subnet mask is associated with configuring network settings but is not relevant to the ARP process.

After a successful Address Resolution Protocol (ARP) request, the requesting host acquires the device's MAC address. ARP is used within a local area network to translate an IP address into a MAC address, which is crucial for enabling communication over Ethernet networks.

When a device wants to communicate with another device on the same local network, it uses ARP to discover the MAC address associated with the target device's IP address. The requesting host sends out an ARP request broadcast asking, "Who has this IP address?" The device that owns that IP address responds with its MAC address. This information allows the requesting host to encapsulate its data packets in a frame that can be sent to the correct hardware address on the local network.

The other options, such as the device's hostname, IP address, or subnet mask, are not provided in response to an ARP request. While a device might have a hostname and an IP address, ARP specifically focuses on mapping the IP address to the MAC address for the purpose of communication at the data link layer. The subnet mask is associated with configuring network settings but is not relevant to the ARP process.