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单选题
A system administrator needs to configure dump devices for the system. Which command would be used to estimate the size required for a dump device？（）
A
lsdev
B
chdev
C
sysdumpdev
D
sysdumpstart
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单选题Which of the following problems has occurred when a message appears on the system console indicating that a dump must be copied to external media? （）A
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The dump device was set to /dev/hd7 before the dump happened. C
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The dump device was not set to a paging device before the dump happened.
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