IT 管理者は、主要顧客のドメインへのエイリアスを作成しています。これは次の DNS レコード タイプのうちどれを表しますか?
正解:A
A CNAME record is a type of DNS record that maps an alias name to a canonical name, or the primary domain name. A CNAME record is used to create subdomains or alternative names for the same website, without having to specify the IP address for each alias. For example, a CNAME record can map www.example.com to example.com, or mail.example.com to example.com. Reference: CompTIA Network+ N10-008 Cert Guide, Chapter 2, Section 2.4