Use B for this item. IPv4 hosts use DHCP to obtain dynamically assigned IP addressing information. The DHCP process supplies an IP address, subnet mask, default gateway, DNS server, and lease information without manual host configuration. In Cisco CCNA 200-301 v1.1, IP Services questions frequently test the practical boundary between similar features: what the feature does, where it is configured, and what problem it is meant to solve. ARP resolves IP addresses to MAC addresses, DNS resolves names, and CDP discovers Cisco neighbors. A clean way to validate the answer is to map the wording of the scenario to the actual device function. If the feature supplies addressing, forwarding, authentication, trunking, route selection, or controller communication, the answer must match that function exactly rather than a nearby protocol name.
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