> 1. Some hosts might want you to use a CNAME record to send them your web traffic, and CNAME records are undesirable for apex domain names because they can't coexist with other records you might need (like MX).
Nitpick: With the exception of RRSIGs, a CNAME record must be the only record at a given owner name. Since the apex of a zone has a SOA record, a CNAME cannot exist there.
Nitpick: With the exception of RRSIGs, a CNAME record must be the only record at a given owner name. Since the apex of a zone has a SOA record, a CNAME cannot exist there.