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(难度：中等)Yig是Yet another Index Gateway的简写。（）
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You moved the index EMP_NO_INDX from one tablespace to another and then issued the following command to rebuild the index EMP_NO_INDX： SQL ALTER INDEX EMP_NO_INDX REBUILD ONLINE； Which table allows the users to access the EMP_NO_INDX index while performing the rebuild operation？（） A、 Index-organized tableB、 Mapping TableC、 Clustered TableD、 Journal Table
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You are a DBA of your company. You created a database named SALES on an Oracle 10g instance. You have defined an index named INDEX1 on the database table named INVENTORY. Users are complaining that queries accessing the INVENTORY table are running slow. Upon investigation you determine that the tablespace where the index is located is experiencing high I/O and you decide to relocate the index to another tablespace. Which of these will be the best way to accomplish this objective？（）A、 Rebuild the index.B、 Coalesce the index.C、 Drop and re-create the index in the new tablespace.D、 Relocate the index using the ALTER INDEX...MOVE statement.
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In which scenarios would you rebuild an index？（）A、 when you need to disable the index usageB、 when you need to change storage optionsC、 when you need to enable index monitoringD、 when you need to move the index to another tablespace
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单选题You moved the index EMP_NO_INDX from one tablespace to another and then issued the following command to rebuild the index EMP_NO_INDX： SQL ALTER INDEX EMP_NO_INDX REBUILD ONLINE； Which table allows the users to access the EMP_NO_INDX index while performing the rebuild operation？（）A
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( 难度：中等)沃云对象存储的整体架构层次，从上往下依次为：（）A.ClientàNginxàYigàCephB.ClientàYigàNginxàCephC.Clientà CephàNginxà YigD.ClientàYigàCephà Nginx
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