In the context of Cisco's Unified Computing System, which three Cisco best practices are recommended...

All WWN must use "20" for the first octet

Define a standard convention for WWNs agreed upon by all stakeholders for address blocks

Select the default values presented by UCS Central

Use Cisco's OU (00:25 BS> for the 3rd to 5th octets in WWN

Use the same hex value for 1st and 2nd octets m WWNN and WWPN

Engage the security team to request WWNs