A technician plugs a USB device into the front panel of a desktop computer and nothing happens.The technician knows that plug-n-play is enabled. Which of the following BEST describes a possible cause to this issue?（）

A、The technician plugged a USB 2.0 device into a USB 1.1 port.

B、The technician needs to reboot the computer for the device to work.

C、The technician plugged a USB 1.1 device into a USB 2.0 port.

D、The front panel connectors are not plugged into the motherboard.

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第1题

[单选题] A technician needs to find an end of a network cable drop. Which of the following tools would the technician use?（）

A、Cable tester B、Multimeter C、Toner probe D、Loopback plug

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第2题

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第3题

[单选题] Which of the following tools should Mike, a technician, use when testing a serial port?（）

A、Cable tester B、Multimeter C、Loopback plug D、Logic probe

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第4题

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A、in all cases B、for some non PnP（non plug and play） device drivers and all PnP（plug and play） device drivers C、for all non PnP（non plug and play） device drivers and most PnP（plug and play） device drivers D、not for any non PnP（non plug and play）device drivers,only for all PnP（plug and play） device drivers

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第5题

[单选题] A technician needs to install an additional PCI NIC without powering down the server. Which of the following BEST describes the technology the board must support？（）

A、 Hot install B、 Hot add C、 Plug and play D、 Hot plug

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第6题

[多选题] A technician turns on a PC and before the computer boots up, the technician is prompted for apassword. The technician does not know the password. Which of the following can the techniciando to allow access to the PC?（） (Select TWO).

A、Set the clear password jumper on the motherboard B、Enter the BIOS setup and select the clear password setting C、Remove the power cord from the power supply and then plug it back in D、Power cycle the PC E、Remove the CMOS battery for 15 minutes

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第7题

[多选题] Which of the following will allow Karen, a technician, to determine if the correct voltages are reaching the computer components? (Select TWO).（）

A、Power supply tester B、Cable tester C、Loopback plugs D、Multimeter E、Butt set

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第8题