What are two features of the Address Resolution Protocol (ARP)?

The Address Resolution Protocol (ARP) serves a critical function in networking by mapping IP addresses to their corresponding MAC addresses, which are necessary for devices within a local network to communicate effectively. One of its primary features is the generation of an ARP broadcast when a device needs to discover the MAC address associated with a specific IP address but does not have that information in its ARP cache. This broadcast allows all devices on the local network segment to receive the request, and the device that owns the queried IP address responds with its MAC address. This fundamental mechanism enables seamless communication within Ethernet networks.

The other options present features that do not align with the core functionality of ARP. For instance, ARP does not deal with IPv6 addresses, persistent connections, or the management of data fragmentation. Instead, ARP is specifically designed for IPv4 address resolution and does not maintain any sort of connection, nor does it engage in the fragmentation and reassembly of data packets, which are functions handled at higher layers of the OSI model.