Which of the following commands should be used to identify packet sequence problems？（）

A. ping and arp
B. lsattr and ifconfig
C. netstat and iostat
D. iptrace and tcpdump

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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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Which command series should be used to determine whether file paging or paging space paging is a problem when running a program from an idle system？（）

A. foo ； lsps -s
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A system administrator would like to reset statistics to initial values prior to collecting device statistics on ent0 interface. Which of the following commands should be run to accomplish this？（）

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D. Ethernet interface values cannot be reset

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