IPv6 DNS record mapping follows the same DNS logic as IPv4 but uses IPv6-specific address records where needed. An AAAA record maps a hostname to an IPv6 address. A PTR record supports reverse lookup, mapping an address back to a name through the reverse DNS tree. CNAME provides an alias from one hostname to another canonical hostname. NS records identify authoritative name servers for a zone, and MX records identify mail exchangers for a domain. Cisco CCNA 200-301 v1.1 Network Fundamentals and IP Services expect candidates to understand DNS at a practical level: users and applications use names, while the network ultimately forwards to addresses. For drag-and-drop questions, do not match by visual similarity; match by function. If the description asks for IPv6 host-name-to-address resolution, choose AAAA. If it asks for reverse resolution, choose PTR. Alias behavior is CNAME, authority is NS, and mail routing is MX.
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