1Z0-042單項選擇題每日一練(2019.01.20)

來源：考試資料網(wǎng)

1 You have three databases， FINDB， PAYDB and ADMINDB， located in Sydney， Tokyo and Singapore respectively. You want to perform administrative tasks which include starting up and shutting down the databases， creating and managing tablespaces and database users， and taking regular backups， for all of the three databases from London. Which component must be enabled and running on each host machine to achieve your objective？（）

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2 When you try to open your database， you receive the following error： ORA-00205： error in identifying control file
Where would you find the details required to resolve this error？（）

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3 You work as a database administrator for Certkiller .com. You enabled tracing while creating a listener to your database.
What additional information is available to you when you enable tracing？（）

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4 You work as a database administrator for Supportcenter.cn. Client connection requests are failing because the listener is not responding. You want to forward client connect requests to another listener if one listener is not responding. How do you achieve this？（）

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5 You work as a database administrator for Certkiller .com. You started the instance using theinit.orafile. You have two control files and three redo log groups in your database. You decided to protect the database against failures by adding one more control file. Which file is the appropriate way to perform this task？（）

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