QUESTION 57
Your database instance is running. You are not able to access Oracle Enterprise Manager Database Control
because the listener is not started.
Which tool or utility would you use to start the listener?
A. Oracle Net Manager
B. Listener Control utility
C. Database Configuration Assistant
D. Oracle Net Configuration Assistant
Answer: B
同634题：http://blog.csdn.net/rlhua/article/details/13506759
Explanation/Reference:
Section: Initialization, Parameters, File Location & Server Configuration
http://download.oracle.com/docs/cd/A97630_01/network.920/a96581/lsnrctl.htm
Listener Control Utility:
The Listener Control utility enables you to configure listeners to receive client connections. You can access the
utility through Enterprise Manager or as a standalone command-line application.