Which tool is based on the AIX trace facility？（）

A. no
B. netpmon
C. entstat
D. nfso

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Which of the following commands should be used to tune parameters of devices that are displayed with lsattr？（）

A. chdev
B. cfgmgr
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Which of the following commands should be used to identify packet sequence problems？（）

A. ping and arp
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In AIX 5L and later， the operating system supports the /proc filesystem. What would be the best description of the /proc filesystem？（）

A. It is a pseudo filesystem that maps processes and kernel data structures to corresponding files.
B. It is a JFS mounted filesystem that provides an exact representation of what is happening to a proces at a single and discrete point of time.
C. It is a JFS mounted filesystem that maps processes and read-only files related to these processes.
D. It is a pseudo filesystem that contains data that represents the state of the parent processes （but not their threads） in a system.

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