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单选题 Which of the following statements about cooling is true?()

A

Adapter cards (e.g. modems) do not add to the heat generated in a computer case.

B

Bus mastering reduces the amount of heat generated inside a computer case.

C

Removing expansion slot covers can compromise cooling airflow design.

D

Periodic cleaning of the computer components inside the case has no effect on cooling efficiency.

单选题 A technician accesses a corporate users hard drive and notices that there are inappropriate images in their My Documents folder. Accessing this kind of material is a clear violation of company policy. Which of the following should the technician do? ()

A

Confront the user and tell them to remove the material.

B

Backup the files and delete them from the users folder.

C

Inquire with the manager about policies and procedures.

D

Ignore the files, this is the users personal documents folder.

多选题 A technician is attempting to get into the BIOS and they are being prompted for a password. Which of the following can clear the BIOS password?()

A

Pull the CMOS battery.

B

Pull the 20/24 pin connector from the main board.

C

Short the reset circuit near the RAM.

D

Use the appropriate jumper on main board.

E

Use the reset button on the front panel.

单选题 In which of the following scenarios would MAC filtering be MOST effective as a part of wireless security? ()

A

A public place where guests are free to access the wireless network.

B

A small office where a defined number of specific wireless devices are used.

C

A meeting room where various company users will access the wireless network during meetings. 

D

An office where some users are unable to use WPA encryption due to older wireless cards so they use MAC filtering.

单选题 A technician installs a SATA controller card and moves the hard drive cable from the system board to the SATA controller. The system POSTs and the controller BIOS recognizes the hard drive but does not boot to the hard drive and start Windows. Which of the following is the MOST likely cause of the problem?()

A

Windows cannot be booted from a controller card.

B

The hard drive must have Windows reinstalled because a new controller card was installed.

C

The SATA controller card was not set as a boot device in the computer BIOS.

D

The new controller must have the correct jumper settings for Windows mode.

单选题 Which of the following IEEE standards applies to parallel data transmission?()

A

IEEE 1394

B

IEEE 802.3

C

IEEE 802.11

D

IEEE 1284

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