Katie can achieve this goal by listing the alternate domains on the certificate using the Subject Alternate Name (SAN) attribute. A wildcard certificate would not work in this case because the websites use two different domains (mywebsite.com and myotherwebsite.com). She could use a wildcard certificate if all sites had the same domain name (e.g. *.mywebsite.com). The Common Name (CN) on the certificate specifies the primary name used by the certificate, not additional names. Extended validation (EV) certificates provide an added degree of assurance and do not provide additional server names.