单项选择题

After a technician installs a new CMOS battery on a motherboard, which of the following will thetechnician have to change? （）

A. Firmware version
B. System date/time
C. Bus speeds
D. Jumper settings

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单项选择题

A. Security Center
B. Event Viewer Security log
C. Windows Defender
D. Windows Firewall

多项选择题

A. Unplug the CMOS battery.
B. Unplug the power supply.
C. Switch on the reset jumper.
D. Replace the RAM.
E. Unplug the CPU.

单项选择题

A. Time Domain Reflectometer (TDR)
B. Oscilloscope
C. Power supply tester
D. Spectrum analyzer