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 organiz

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第2题：

You work as a database administrator for Certkiller .com. Your database is functional. One of the disks containing a mirrored redo log member has bad sectors in it. You are unable to fix the damaged file.  How does the loss of a redo log member affect the instance of the database that is currently running？（）

• A、The instance would normally abort.
• B、The instance would not be affected.
• C、The instance would be invalid， so would have to be aborted.
• D、The instance would remain open， but the LGWR process would fail.
• E、The instance would remain open and would automatically create the missing file

第3题：

You work as a database administrator for Certkiller .com. Users complain that their query is taking a long time to complete. You suspect the database buffer cache size to be the reason， and you define an alert to be generated when the buffer cache hit metric goes below 85%. When you observe the dynamic performance views， you find that the buffer cache hit ratio is 81% but no alerts are being generated.  What could be the reason for this problem？（）

• A、The advisory memory has been turned off.
• B、The DB_CACHE_ADVICE parameter has been set to OFF in the parameter file.
• C、The STATISTICS_LEVEL parameter has been set to BASIC in the parameter file.
• D、The TIMED_STATISTICS parameter has been set to FALSE in the parameter file.
• E、The STATISTICS_LEVEL parameter has been set to TYPICAL in the parameter file.

第4题：

You have been recently hired as a database administrator. Your senior manager asks you to study the production database server and submit a report on the settings done by the previous DBA.  While observing the server settings， you find that the following parameter has been set in the parameter file of the database：  REMOTE_OS_AUTHENT = TRUE  What could have been the reason to set this parameter as TRUE？（）

• A、to enable operating system authentication for a remote client
• B、to restrict the scope of administration to identical operating systems
• C、to allow the start up and shut down of the database from a remote client
• D、to enable the administration of the operating system from a remote client
• E、to disable the administration of the operating system from a remote client

第5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.

第6题：

The production database has been functional for the last seven days. Because of application requirements， some of the initialization parameters were changed during run time without any comments. You have been asked to find out the value of the parameters when the instance was started. Which source would you use to locate this information？（）

• A、fixed views
• B、the alert log file
• C、the parameter file
• D、the server parameter file
• E、dynamic performance views

第7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 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8题：

You have a listener process， L1， currently listening for the connections to the PROD and ADMIN databases. You create a new database， PAY， using CREATE  DATABASE.. command. You have not enabled dynamic instance registration. You modified the LISTENER.ORA file manually to include PAY database for L1 listener process.  Which command of Listener control utility （LSNRCTL） would you use to enable L1 process to start listening for the connections to the PAY database without disrupting any existing database communications？（）

• A、START
• B、RELOAD
• C、RESTART
• D、REFRESH
• E、START L1
• F、RELOAD L1
• G、RESTART L1
• H、REFRESH L1

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第13题：

The production database has been functional for the last seven days. Because of application requirements， some of the initialization parameters were changed during run time without any comments. You have asked to find out the value of the parameters when the instance was started.Which source would you use to locate this information？（）

• A、 Fixed views
• B、 The alert log file
• C、 The parameter file
• D、 The server parameter file
• E、 Dynamic performance views

第14题：

You work as an application developer at Certkiller .com. Certkiller .com has been hired by a small local private school to develop a class library that will be used in an application named ManageAttendance for the purpose of managing student records.You are responsible for developing this class library. Certkiller .com has instructed you to create a collection in the application to store learners’ results. The school has informed you that they currently only have seven learners， but that this value will triple in the following year. Due to the limited resources， you need to ensure that the collection you create consumes a minimum amount of resources. What should you use to create the collection？（）

• A、 The HybridDictionary collection class.
• B、 The HashTable collection class.
• C、 The ListDictionary collection class.
• D、 The StringCollection collection class.

第15题：

You work as a database administrator for Certkiller .com. Your database is in NOARCHIVELOG mode. The database has been configured with three redo logs groups， and there have been five log switches. You lost one non-system-critical data file from your database.  Which method would you use to recover the data file？（）

• A、Restore all the data files and open the database
• B、Create the data file and performtablespacerecovery
• C、No need to restore any file， just recover the database
• D、Restore only the system data file and recover the database
• E、Restore only lost date file and performtablespacerecovery

第16题：

You work as a database administrator for Certkiller .com. In your organization， you have four databases， Certkiller DB01， Certkiller DB02， Certkiller DB03， and Certkiller DB04， which are located in Berlin， Frankfurt，Rammstein， and Munich respectively， and which were created using Database Configuration Assistant （DBCA）.  You want to perform administrative tasks on these databases that include startup and shutdown， taking regular backups， and so on， fromFrankfurtusing Oracle tools. Which Oracle file would you enable to perform this task？（）

• A、Control file
• B、Password file
• C、Parameter file
• D、Online redo log file
• E、Listener controller file
• F、Server parameter file

第17题：

You are working as a Database Administrator. Despite having a password in the data dictionary as change_on_install， you always log on to the database MYNEWDB using operating system authentication. Your organization is planning to recruit two junior-level DBAs. You decide to enable remote authentication in your database so that the new DBAs can log on to the database from their workstations to carry out administrative tasks.   To allow the new DBAs to perform the administrative tasks， you create a password file on the database server using the following command：   ORAPWD file=d：/oracle/ora9i/orapwU01 password=admin entries=4   After creating the password file， you remove the operating system authentication and change the value of the  REMOTE_LOGIN_PASSWORDFILE parameter to EXCLUSIVE. You also create a net service name as MYNEWDB that allows the new DBAs to connect to the database server from their workstations using this net service name. Which command must you use to connect to the database to start it？（）  

• A、 CONNECT / AS SYSDBA
• B、 CONNECT sys/admin AS SYSDBA
• C、 CONNECT sys/admin@mynewdb AS SYSDBA
• D、 CONNECT sys/change_on_install AS SYSDBA

第18题：

You are maintaining the database of a company. The listener process， listener1， is configured for remote access. You have issued the following command：   LSNRCTL>STATUS 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 not
• B、 the number of client connections the service handler has refused
• C、 the information will be displayed whether the instance can accept connections or not
• D、 the protocol addresses on which the listener is configured to listen

第19题：

You work as a database administrator for Certkiller .com. Your listener process， L1，is currently listening to three databases：CertK INDB04，Certkiller DB05 and Certkiller DB06. Using Database Configuration Assistant （DBCA） you create one more database，Certkiller DB07，and enable dynamic registration.  Which two commands of Listener Control Utility （lsnrct1） would you use to determine whether the dynamic registration occurred for the database， Certkiller DB07， with the L1 listener process？（）

• A、SHOW L1
• B、SPAWN L1
• C、STATUS L1
• D、SERVICES L1
• E、STATUS LISTENER
• F、SERVICES LISTENER
• G、SHOWcurrent_listener

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