單項(xiàng)選擇題

Data is transferred between two servers using NFS， where one server is configured with token ring， and the other system is configured with ethernet. It is discovered that the performance is greatly reduced during this transfer. Which of the following steps should be taken to improve performance？（）

A. Reduce MTU on token ring system to match ethernet system using ifconfig command （i.e. ifconfig tr0 mtu 1500）
B. Reduce MTU on token ring system to match ethernet system using no command （i.e. no -o mtu=1500）
C. Increase MTU on ethernet system to match token ring system using ifconfig command （i.e. ifconfig en0 mtu 4096）
D. Increase MTU on ethernet system to match token ring system using no command （i.e. no -o mtu=4096）

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單項(xiàng)選擇題

The system administrator has determined that a new JFS log needs to be created on a different disk， in order to decrease an I/O bottleneck. Which of the following steps are the most correct？（）

A. mklv -t jfslog -y LVname VGname 1 PVname     logform /dev/LVname      chfs -a log=/dev/LVname /filesystemname m     ount and unmount filesystem
B. mklv -t jfslog -y LVname VGname PVname       unmount filesystem        vi /etc/filesystems， change entry for lv to point filesystem to new JFS log       mount filesystem
C. mklvcopy -a jfslog -y LVname VGname 1 PVname       chfs -a log=/dev/LVname /filesystemname       unmount and mount file system
D. mklvcopy -t jfslog -y LVname VGname 1 PVname       logform /dev/LVname        vi /etc/filesystems， change entry for lv to point filesystem to new JFS log      unmount and mount filesystem

單項(xiàng)選擇題

Which of the following statements are FALSE concerning the defragfs command？（）

A. The defragfs command should not be run against file systems and logical volumes that contain mostly transitory information， such as /tmp.
B. The defragfs command should not be run on a large JFS2 file system when running on a 32-bit kernel.
C. The defragfs command can improve file system performance by increasing the file system’s contiguous free space.
D. The defragfs command can only be run against file systems that are mounted with read-write permissions.

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The system administrator has determined that a new JFS log needs to be created on a different disk， in order to decrease an I/O bottleneck. Which of the following steps are the most correct？（）

Which of the following statements are FALSE concerning the defragfs command？（）

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The system administrator has determined that a new JFS log needs to be created on a different disk， in order to decrease an I/O bottleneck. Which of the following steps are the most correct？（）

Which of the following statements are FALSE concerning the defragfs command？（）