Exam 1Y0-241 topic 1 question 7 discussion

Scenario: A Citrix Administrator needs to configure persistence on a global server load balancing (GSLB) vServer to which a service is bound. Service must continue to handle requests from the client even after it is disabled manually `" accepting new requests or connections only to honor persistence. After a configured period of time, no new requests or connections are directed to the service and all existing connections are closed.
To achieve these requirements, which parameter can the administrator configure while disabling the service?