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单选题
Which of the following procedures is safest perform when updating licensed program products?（）
A
Load all updates in the commit state
B
Load all updates in the applied state until tested
C
Perform all software updates in maintenance mode
D
Use the Force Overwrite option for filesets that are already committed.
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Which of the following procedures is safest perform when updating licensed program products?()
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Reboot the system. B
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Increase number of licenses. D
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CO2B
FoamC
Water fogD
Soda acid
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