单项选择题

A system administrator found a process on the server that should be stopped. What command can be used to list all the signal actions defined for this process？（）

A.ps
B.pstat
C.portmap
D.procsig

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单项选择题

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.

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

单项选择题

A system administrator ran the iostat command because of system performance problems. The following iostat output is provided：

Based on the output， which of the following is insufficient？（）

A.CPU
B.Memory
C.Paging space
D.Disk capacityX