单项选择题

A company uses raw logical volumes. Which command can be used to back up the data in the raw logical volumes to a tape？（）

A.dd
B.tar
C.cpio
D.mksysb

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单项选择题

A system administrator is attempting to restore some files from a backup tape. The restore failed. The system administrator suspects the block size of the tape drive is incorrect. Which of the following commands can be used to determine the block size of the backup tape？（）

A.dd
B.tar
C.cpio
D.restore

单项选择题

A system administrator wants to automatically eject the backup tape each night after the backup is complete. Which command can be used to eject the tape？（）

A.tar
B.tctl
C.rmdev
D.backup

单项选择题

The rootvg disk on a system failed and was replaced. The system was restored using the latest mksysb. However， no files in the /home filesystem were restored. What is the likely cause of this problem？（）

A.The new drive is too small to hold the entire rootvg
B.The /home filesystem was not mounted during creation of the mksysb
C.The /home stanza in the bosinst.data contained an entry ’restore=no’
D.The /home filesystem was NFS exported to another system during creation of the mksysb