A client-server application has become very popular and hundreds of users are accessing the Oracle Server daily. Which of the following networking solutions should be implemented to ensure that all users can access the Oracle Server?

The correct answer is C because Oracle Connection Manager provides connection pooling and multiplexing capabilities that allow hundreds of users to efficiently share network connections to the Oracle Server. Dedicated Server (A) assigns one server process per user, which doesn't scale well. Directory Naming (B) is for name resolution, not connection management. Heterogeneous Services (D) is for accessing non-Oracle data sources.