Integration between _______ multidata sources and _____ is defined as the Grid Link for RAC. 

Answer options:

A. Oracle WebLogic Server; Oracle Database
B. Oracle WebLogic Server clusters; Oracle Database
C. Oracle WebLogic Server clusters; Oracle Database RAC
D. Oracle OC4J; Oracle Database RAC
E. Oracle WebLogic Server; Oracle OC4J

C

The WebLogic Server JDBC subsystem has supported Oracle RAC since WLS version 8.1 SP5, originally developed for Or.acle9i RAC. This support is based on a particular type of data source configuration, called a multi data source. A multi data source is a data source abstraction over one or more individual data sources. It serves JDBC connections from each of the member data sources according to a specified policy2. A RAC multi data source configuration requires that each member data source obtain connections to a particular RAC instance, as illustrated in the following diagram of a three-node RAC cluster configuration. 

Reference: Oracle WebLogic Server Active GridLink for Oracle Real Application Clusters (RAC)