单选题Your database is open and the LISTENER listener is running. The new DBA of the system stops the listener byusing the command：LSNRCTL> STOP What happens to the sessions that are presently connected to the database instance（）A The sessions are able to pe

第1题：

You executed the following command in the lsnrctl utility to stop the listener： lsnrctl> STOP L1  What is the effect of this command if L1 is the only listener configured for your database？（）

• A、It terminates all user sessions.
• B、It prevents users from logging in to the database remotely.
• C、It halts the server until all user transactions are completed.
• D、The server hangs， so users will receive an error asking them to login again.
• E、Connected users would get an error with the message "End of communication channel".

第2题：

our 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

第3题：

第4题：

The tnsnames.ora file has an entry for the service alias ORCL as follows:The TNS ping command executes successfully when tested with ORCL; however, from the same OS usersession, you are not able to connect to the database instance with the following command:SQL > CONNECT scott/tiger@orcl What could be the reason for this?（）

• A、The listener is not running on the database node.
• B、The TNS_ADMIN environment variable is set to the wrong value.
• C、The orcl.oracle.com database service is not registered with the listener.
• D、The DEFAULT_DOMAIN parameter is set to the wrong value in the sqlnet.ora file.
• E、The listener is running on a different port.

第5题：

You were recently hired by Certkiller .com as a database administrator. You are asked to find out whether the currently functional listener process， named L1， has been password protected or not. You are not familiar with the file system of the new organization. How would you accomplish the task？（）

• A、 by using the STATUS command of the Listener control utility
• B、 by using the STATUS L1 command of the Listener control utility
• C、 by using the SHOW RULES command of the Listener control utility
• D、 by using the SET PASSWORD command of the Listener control utility
• E、 by searching for the PASSWORD_LISTENER entry in the listener.ora file

第6题：

Your database is open and users are connected using the LISTENER listener. The new DBA of the system stops the listener by using the following command：  LSNRCTL> STOP  What would happen to the sessions that are presently connected to the database instance？（）

• A、The sessions are able to perform only queries.
• B、The sessions are not affected and continue to function normally.
• C、The active transactions are rolled back and the sessions get terminated.
• D、The sessions are not allowed to perform any operations till the listener is started.

第7题：

Your database is open and the LISTENER listener is running. The new DBA of the system stops the listener byusing the command：LSNRCTL> STOP What happens to the sessions that are presently connected to the database instance（）

• A、The sessions are able to perform only queries.
• B、The sessions are not affected and continue to function normally.
• C、The sessions are terminated and the active transactions are rolled back.
• D、The sessions are not allowed to perform any operations till the listener is started

第8题：

第9题：

You plan to use static database registration for a new listener when you create it. What could be the two reasons for this？（）

• A、More than one database is to be registered with the listener.
• B、The users will connect the database by using the host naming method.
• C、The Oracle Enterprise Manager is to be used to monitor an Oracle9i database.
• D、The database that is to be registered with the listener is configured in shared server mode.
• E、The listener is not configured on the default port of 1521 and the instance is not configured to register with a nondefault port.

第10题：

Your database is open and the LISTENER listener is running. The new DBA of the system stops thelistener by using the command：  LSNRCTL> STOP  What happens to the sessions that are presently connected to the database instance（）

• A、The sessions are able to perform only queries.
• B、The sessions are not affected and continue to function normally.
• C、The sessions are terminated and the active transactions are rolled back.
• D、The sessions are not allowed to perform any operations till the listener is started.