单项选择题

Which of the following commands restarts a TCP/IP subsystem that provides network services （）

A.refresh -s inetd
B.refresh -s tcpip
C./etc/rc.tcpip efresh
D.refresh -g inetd

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单项选择题

An administrator runs mktcpip aixhost 172.168.0.50 enO to change the network address， but the command hangs for an extended period of time.
Which of the following is the most likely cause of the problem（）

A.entO is in a defined state
B.enO is currently active
C.There is no physical network adapter on the system
D.The address 172.168.0.50 is in use by another system

单项选择题

An administrator received a call from a user whose PC crashed while using vi to edit a file. The user wants the edited file back. Where should the administrator look for the file（）

A./tmp
B./var/preserve
C./var/tmp/$USER
D.$HOME/.vi

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Under which of the following circumstances must a JFS filesystem be used instead of a JFS2 filesystem（）

A.filesystem will contain 100GB files
B.filesystem resides on a 32-bit system
C.filesystem contains a large number of small files
D.filesystem compression is required