Which statement accurately describes the difference between two loadbalancing modes specified as "member" and "node"?

There is a functional difference between 'member' and 'node' load balancing modes, as they govern how features like priority groups and health monitors are applied, so they are not merely for backward compatibility.

When load balancing is configured at the 'node' level in BIG-IP, traffic is directed to the node IP address rather than individual pool members. Consequently, features such as priority group activation, which inherently operate on groups of pool members, are not available or applicable in this mode.

Load balancing options referencing 'nodes' are independent of how pool members are defined; node-level load balancing can be configured and applied whether pool members are explicitly defined or not.

When load balancing references 'node', the system uses the overall node's availability, health, and configured ratio, not specific address parameters beyond the node's IP, to make load balancing decisions.