单项选择题

A.They are the decimal numbers corresponding to the act……

What do the entries in the /proc directory represent？（）

A.They are the decimal numbers corresponding to the active process IDs.
B.They are the decimal numbers corresponding to the gid of the system group.
C.They are the decimal numbers corresponding to the block IDs of the boot sector.
D.They are the decimal numbers corresponding to the inodes of the system directories.

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单项选择题Because of system performance problems， a system administrator ran the iostat command. The following iostat output is provided： Which of the following issues can be derived from the output？（）

A.The server is CPU bound.
B.The server has network problems.
C.The server is memory constrained.
D.The server needs the disk usage to be optimized.X

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A.CPU
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C.tuncheck -r -f nextboot
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