【第10题】【063题库】2019年OCP12c认证1Z0-063考试题库大全
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我要咨询OCP 12c考试考3科,分别是071、062、063,之前071和062都已经做过解析,这里开始063题库解析,希望对考063的同学有帮助,顺利通过063考试。
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第10题.Examine the command to back up the ASM metadata:
ASMCMD>md_backup /backup/ASM_backup
In which three situations can you use the backup?
A. when one or more disks in an ASM disk group are lost
B.when the data file on an ASM disk group gets corrupted
C. when one of the disks in a disk group is accidentally unplugged
D. when one or more file directory paths are accidentally deleted from an ASM disk group
E. when all the ASM disk groups for the ASM instance are lost
Answer: A,C,E
解析:元数据的用途是恢复磁盘组,如果磁盘组里面的磁盘出现损坏,应该是物理的损坏则会导致该磁盘组无法工作,需要用到元数据恢复。如果是逻辑的从磁盘组中删除磁盘,则不会到账磁盘组无法工作,无需用到元数据,所以答案 D 是错误的。
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