You have a requirement for a device to provide 20 W of power over Ethernet.
What meets this requirement?
A.
Bond two standard PoE ports together to achieve 30.8 W of power.
B.
Install an external redundant power supply in the switch to increase the total power load.
C.
Select a switch that has PoE+ support.
D.
Enable LLDP-MED to transfer power from other switches.
http://www.juniper.net/techpubs/en_US/junos/topics/concept/poe-overview.html
30 W