单项选择题

A technician is troubleshooting a WLAN card in a laptop. The wireless infrastructure is 802.11g. TheWLAN card is showing connected at 11Mbps. Which of the following would be the BEST reason why theWLAN card is performing at that speed? （）

A. The WLAN card is 802.11g.
B. The WLAN card is 802.11b.
C. The WLAN card is 802.11n.
D. The WLAN card is 802.11a.

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单项选择题

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

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.