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单项选择题The system hangs at boot time after starting NFS services. What is the most likely cause？（） 

A、The action parameter of rcnfs in /etc/inittab is ’off’ and the script called is not exiting.

B、The action parameter of rcnfs in /etc/inittab is ’wait’ and the script called is not exiting.

C、The action parameter of rcnfs in /etc/inittab is ’once’ and the script called is not exiting.

D、The action parameter of rcnfs in /etc/inittab is ’respawn’ and the script called is not exiting

  • B

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