What feature of the load balancing service attempts to force subsequent connections to a service
to be redirected to the same node as long as it is online?

A.
Node balance

B.
Session retention

C.
Session multiplexing

D.
Session persistence

Explanation:
Session persistence is a feature of the load balancing service. It attempts to force subsequent
connections to a service to be redirected to the same node as long as it is online.
http://docs.rackspace.com/loadbalancers/api/v1.0/clb-devguide/content/Concepts-d1e233.html