When troubleshooting a DNS resolution failure for the alias `www.acme.local`, an administrator confirms that a CNAME record correctly points to `webserver.acme.local`. Which record must also exist in the forward lookup zone for the client to successfully resolve `www.acme.local` to an IP address?

A structured diagnosis follows the query path and the record chain. First confirm the client is asking the intended server. Then inspect the forward zone for the `www` alias and verify its target. Because the alias points to `webserver.acme.local`, confirm that the target name also has the expected host record. Finally, repeat the query. This sequence separates client configuration errors from missing or incorrect zone data. **Key takeaway:** Troubleshoot the resolver, alias, and target record systematically.\n\n**Glossary:** **CNAME**: An alias from one name to another. **Target**: The name referenced by the alias. **Forward zone**: The zone used to answer name-based queries.