Which AOS-CX switches support weighted fair queuing (WFQ)?

What is correct regarding policy-based routing?

A company has recently upgraded their campus switching infrastructure with AOS-CX switches.
They have implemented 802.1X authentication on access ports where laptop and IOT devices typically connect. An administrator has noticed that for POE devices, the AOS-CX switch ports are delivering the maximum wattage to the port instead of what the device actually needs.
Concerned about this waste of electricity, what should the administrator implement to solve this problem?

An administrator is configuring BGP and has two connections to a service provider to two different local routers. Which BGP metric should the administrator configure to influence which local router the service provider will use to reach certain routes?

What is a reason to create a virtual link between two OSPF routers?