单选题After the /etc/tunables/nextboot file has been edited， which command can be used to validate changes to the IO performance tuning settings？（）Aioo -v nextbootBioo -c nextbootCvalcheck -f nextbootDtuncheck -r -f nextboot
单选题
After the /etc/tunables/nextboot file has been edited， which command can be used to validate changes to the IO performance tuning settings？（）
A
ioo -v nextboot
B
ioo -c nextboot
C
valcheck -f nextboot
D
tuncheck -r -f nextboot
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