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一个完整的Servlet事件监听器包括Listener类和＜listener＞配置。
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更多 “一个完整的Servlet事件监听器包括Listener类和＜listener＞配置。” 相关考题
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Your database is open and the LISTENER listener running. You stopped the wrong listener LISTENER byissuing the following command:lsnrctl >STOPWhat happens to the sessions that are presently connected to the database Instance?（）A. They are able to perform only queries.B. They are not affected and continue to function normally.C. They are terminated and the active transactions are rolled back.D. They are not allowed to perform any operations until the listener LISTENER is started
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通常我们使用( )方法来为一个部件注册事件监听器。A.add×××ListenerB.×××ListenerSX
通常我们使用（ ）方法来为一个部件注册事件监听器。A.add×××ListenerB.×××ListenerC.Listener×××D.×××Listeneradd
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监听事件和处理事件______。A．都是由Listener完成B．都由相应事件Listener处登记过的组件完成C．由Listener和窗口分别完成D．由Listener和组件分别完成
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You work as a database administrator for Supportcenter.cn. You are working on Oracle Database 10g. To forward client connections to an instance， the listener must know information such as the name of the instance and where the instance’s ORACLE_HOME is located. How does the listener get this information？（）A、It gets it from the parameter file.B、The listener prompts for details on startup.C、The listener gathers information from the control file.D、The instance automatically registers with the default listener.E、The listener gets this information through thelistener.orafile.
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关于JAVA事件机制，下列哪一项是不正确的（）A、对一个组件的某类事件，只能注册一个监听器B、有多个事件类和对应的监听器类C、使用时需要对目标组件注册监听器，处理对应具体事件D、注册监听器后可以随时撤销
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所有AbstractButton组件都实现了（）A、Action Listener 接口B、Serializable Listener 接口C、Change Listener 接口D、Item Listener 接口
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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 utilityB、 by using the STATUS L1 command of the Listener control utilityC、 by using the SHOW RULES command of the Listener control utilityD、 by using the SET PASSWORD command of the Listener control utilityE、 by searching for the PASSWORD_LISTENER entry in the listener.ora file
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You want your listener to be password protected to prevent it from being shut down. You want to accomplish this task while the listener is functional. Which method could you use to achieve this objective？（）A、 Use the CHANGE_PASSWORD command of the Listener control utility.B、 Use the SET PASSWORD and SAVE_CONFIG commands of the Listener control utility.C、 Use the CHANGE_PASSWORD and SAVE_CONFIG commands of the Listener control utility.D、 Manually modify the listener.ora file to include the password for the listener and restart the listener.
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客户端用于网络连接的两个配置文件文件是（）A、TNSNAMES.ORA和SQLNET.ORAB、TNSNAMES.ORA和LISTENER.ORAC、TNSNAMES.ORA和INIT.ORAD、SQLNET.ORA和LISTENER.ORAE、INIT.ORA和LISTENER.ORA
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You are maintaining the database of a company. The listener process， listener1， is configured for remote access. You have issued the following command： LSNRCTLSTATUS listener1 Which information will NOT be displayed when you issue the above command？（） A、 whether the password is set in the listener or a file or notB、 the number of client connections the service handler has refusedC、 the information will be displayed whether the instance can accept connections or notD、 the protocol addresses on which the listener is configured to listen
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You issue these LSNRCTL commands： LSNRCTL SET CURRENT_LISTENER listener01 LSNRCTL START listener02 What is the result of issuing these commands？（）A、A listener named LISTENER is started.B、A listener named LISTENER01 is started.C、A listener named LISTENER02 is started.D、The START command fails and no listener is started.
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单选题You want your listener to be password protected to prevent it from being shut down. You want to accomplish this task while the listener is functional. Which method could you use to achieve this objective？（）A
Use the CHANGE_PASSWORD command of the Listener control utility.B
Use the SET PASSWORD and SAVE_CONFIG commands of the Listener control utility.C
Use the CHANGE_PASSWORD and SAVE_CONFIG commands of the Listener control utility.D
Manually modify the listener.ora file to include the password for the listener and restart the listener.
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单选题客户端用于网络连接的两个配置文件文件是（）A
TNSNAMES.ORA和SQLNET.ORAB
TNSNAMES.ORA和LISTENER.ORAC
TNSNAMES.ORA和INIT.ORAD
SQLNET.ORA和LISTENER.ORAE
INIT.ORA和LISTENER.ORA
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单选题You were recently hired by an organization 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 utilityB
by using the STATUS L1 command of the Listener control utilityC
by using the SHOW RULES command of the Listener control utilityD
by using the SET PASSWORD command of the Listener control utilityE
by searching for the PASSWORD_LISTENER entry in the listener.ora file
考题
单选题Anyone who knows just the host name and the listener name can have full control over the listener. They can stop the listener and also obtain detailed information about the listener， database， and the configuration of the application. How would you avoid this scenario？（）A
lock the listenerB
hide the listenerC
create multiple listenersD
run listener on a remote clientE
set a password for the listenerF
store listener.ora in a non-default location
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单选题关于JAVA事件机制，下列哪一项是不正确的（）A
对一个组件的某类事件，只能注册一个监听器B
有多个事件类和对应的监听器类C
使用时需要对目标组件注册监听器，处理对应具体事件D
注册监听器后可以随时撤销
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单选题You issue these LSNRCTL commands： LSNRCTL SET CURRENT_LISTENER listener01 LSNRCTL START listener02 What is the result of issuing these commands？（）A
A listener named LISTENER is started.B
A listener named LISTENER01 is started.C
A listener named LISTENER02 is started.D
The START command fails and no listener is started.
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多选题以下（）有关事件监听器的语句是正确的。AMultiple listeners can be attached to one componentBOnly one listener can be attached to one componentCOne listener can receive and process the events from multiple componentsDOne listener can receive and process the events from only one component
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单选题Your database is open and the LISTENER listener running. You stopped the wrong listener LISTENER byissuing the following command:lsnrctl STOPWhat happens to the sessions that are presently connected to the database Instance?（）A
They are able to perform only queries.B
They are not affected and continue to function normally.C
They are terminated and the active transactions are rolled back.D
They are not allowed to perform any operations until the listener LISTENER is started
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