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问题：单选题A defective CD-ROM drive is replaced with a new CD-ROM drive. The new CD-ROM drive is able to read any CD that it accesses， but music CDs do not play music. What is the MOST likely cause of this problem？（）A The audio cable is not connected to the drive...
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问题：单选题Which components are designed to be conveniently replaced by a service technician？（）A SMDs（surface mounted devices）B FRUs（field replacement units）C FESsD BEMs...
问题：单选题Which cleaning product should be used for the inside of a computer？（）A glass cleanerB a simple ammonia and water solution followed by an antistatic solutionC a bleach solution followed by waterD compressed air...
问题：单选题Which test checks the transmitter and receiver of a local modem？（）A data parityB analog loop backC local digital loop backD remote digital loop back...
问题：单选题What is the FIRST and most important step in system troubleshooting？（）A back up the system dataB gather information about the problemC try rebooting the system to see if that fixes the problemD check the System Error Log or Event Log...
问题：单选题What is the standard IRQ for the keyboard？（）A 9B 0C 1D 7...
问题：单选题When replacing a power supply， what MUST the technician observe？（）A voltageB currentC wattageD resistance...
问题：单选题What is the FIRST step in diagnosing a completely dead computer that was working fine the day before？（）A remove all peripherals and reinstall them one at a timeB replace the CMOS batteryC check the AC power cord and verify the power sourceD back up the...
问题：多选题A Laser printer keeps getting a "Memory Overflow" error when printing a particular document. Which three of the following are possible fixes？（）Areset the printer cableBreplace the toner cartridgeCdecrease the print resolutionDadd more RAM to the printe...
问题：单选题Where are the first computer instructions available when a microcomputer is powering up？（）A floppy driveB boot.iniC ROMD config.sys...
问题：单选题A customer receives a CD-RW disk from a computer vendor. The customer tries to read the disk in a computer with a 4X CD-ROM drive and is unable to read any information. The customer tries the CD-RW disk on a 32X CD-ROM drive and it reads correctly. Wha...
问题：单选题A user complains that a computer monitor is experiencing a jitter. Replacing the monitor and video card does not fix the problem. Which of the following could be causing the problem？（）A ESD（electrostatic discharge）B motherboardC RAMDACD EMI（electromagn...
问题：单选题Which IP block is designated for private network use？（）A 127.0.x.xB 169.0.x.xC 190.100.x.xD 192.168.x.x...
问题：单选题What is the MOST significant difference between EDO RAM and fast page mode DRAM？（）A EDO RAM is faster.B EDO RAM is slower.C EDO RAM is smaller.D EDO RAM is cheaper....
问题：单选题A computer boots up with the error "CMOS Checksum Failure." Which of the following components needs to be replaced？（）A power supplyB CMOS chipC motherboardD CMOS battery...
