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單項(xiàng)選擇題

During system boot， the boot process hangs at LED 0551.
Which of the following is a likely cause（）

A.A network problem
B.corrupted filesystem
C.corrupted ODM
D.corrupted /etc/inittab file

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單項(xiàng)選擇題

Which cron entry will run /usr/local/bin/myscript at 0500 every Saturday（）

A.5 0 * * 6 /usr/local/bin/myscript
B.6 * * 5 0 /usr/local/bin/myscript
C.0 5 * * 6 /usr/local/bin/myscript
D.0 5 6 * * /usr/local/bin/myscript

單項(xiàng)選擇題

A System p administrator wants to NFS mount a filesystem from server "alpha" to server "bravo".
Which of the following commands should be issued from "bravo" to determine which filesystems are being exported by server "alpha"（）

A.lsexport alpha
B.showmount -e alpha
C.exportfs -l alpha
D.mount -e nfs alpha

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