单选题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 

第1题：

You need to restore some files from a file system. The file system was backed up from a snapshot.  Which command will correctly restore these files？（）

• A、 fssnap -i
• B、 fssnap -r
• C、 ufsrestore -i
• D、 snaprestore -i

第2题：

A system administrator suspects that there were problems with the AIX installation on a pSeries server. Which of the following commands can be used， with the appropriate flags， to view the BOS installation output files？（）

• A、alog
• B、errpt
• C、lscfg
• D、installp

第3题：

第4题：

A customer has the need to implement a tape backup solution to backup a 500GB database on a daily basis.  Which of the following factors is the most important consideration in the design of a backup and restore solution？（）

• A、Amount of data in the backup
• B、Bandwidth available to the tape device
• C、Length of the backup/restore window
• D、Speed that the backup system can find files for restoration

第5题：

Which command can a system administrator use to verify that a tape is in backup format and is readable by the system？（）

• A、tar
• B、tctl
• C、tcopy
• D、restore

第6题：

A support specialist started to apply an APAR on a system by inserting the tape into the tape drive， and loaded the fix using smitty installp. The following error message is displayed： tape not in backup format   Which of the following will resolve this problem？（）

• A、Change density setting to 2
• B、Set tape device to /dev/rmt0
• C、Set block size to 0 for variable
• D、Enable compression on tape device

第7题：

While using the smit install_remove menus to remove some filesets the system administrator notices the /usr filesystem is now unnecessarily large. Which of the following actions will reduce the size of the /usr filesystem？（）

• A、Backup， unmount， remove， recreate and restore the filesystem.
• B、Boot from mksysb tape and select Shrink filesystems on restore.
• C、Unmount， run defragfs /usr and the reducefs -size XXX /usr commands.
• D、Update /etc/filesystems with the desired size for /usr and reboot the system.

第8题：

A system administrator needs to backup datavg which contains a database that pre-allocates files by padding them with nulls, similar to treating them as sparse files. In order to effectively backup and be able to restore the datavg files, which backup method should be used?（）

• A、savevg
• B、tar
• C、cpio
• D、mksysb

第9题：

While using the smit install_remove menus to remove some filesets on an AIX 5.3 server， a system administrator notices the /usr filesystem is now unnecessarily large.  Which of the following actions will reduce the size of the /usr filesystem （）

• A、Backup， unmount， remove， recreate and restore the filesystem.
• B、Boot from mksysb tape and select Shrink filesystems on restore.
• C、Unmount， run defragfs /usr and the reducefs -size n /usr commands.
• D、Update the /image.data file with the desired size for /usr and reboot the system.

第10题：

A System p 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