Web ホスティング プロバイダーのシステム管理者は、すべての顧客サイトの公開証明書を更新する任務を負っています。必要な証明書の量を最小限に抑えながら、複数のドメイン名をサポートするのに最も適したものは次のうちどれですか?
正解:C
The administrator should use SAN certificates to support multiple domain names while minimizing the amount of certificates needed. SAN stands for Subject Alternative Name, which is an extension of a certificate that allows it to include multiple fully-qualified domain names (FQDNs) within the same certificate. For example, a SAN certificate can secure www.example.com, www.example.net, and mail.
example.org with one certificate. SAN certificates can reduce the cost and complexity of managing multiple certificates for different domains. SAN certificates can also support wildcard domains, such as *.example.
com, which can cover any subdomain under that domain. Verified References:
* https://www.techtarget.com/searchsecurity/definition/Subject-Alternative-Name
* https://www.techtarget.com/searchsecurity/definition/wildcard-certificate
* https://www.nexcess.net/help/what-is-a-multi-domain-ssl-certificate/