A J2EE application maintains information in the HTTP session in memory. This information can be
recreated, but there is a performance penalty to restore state if a user session fails over to a
different cluster member.
Which of the following features maximizes the use of information already stored in a server’s
session?

A.
Database persistence

B.
Session affinity in Web server plugin

C.
Memory–to-memory replication in Both Mode

D.
Memory–to-memory replication in Server Mode