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

第1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. What is the cause of this problem？（）

• A、The 4X CD-ROM drive has dirty optics or laser and requires cleaning.
• B、The 4X CD-ROM drive needs to be jumpered to support CD-RW disks.
• C、The 4X CD-ROM drive does not support the multi-read specification.
• D、The 4X CD-ROM is fine， but the CD-RW disk has a flaw in its format.

第2题：

A PC is powered on and begins POST. The PC takes a long time when scanning for drives. The BIOS reports no hard drive can be found but the CD-ROM is identified. The technician knows that there are two hard drives on the primary EIDE controller and a CD-ROM on the secondary EIDE controller. Which of the following is the MOST likely cause of the problem?（）

• A、Both hard drives have the master jumper in place.
• B、One hard drive is set as master and the other slave.
• C、The hard drive data cable is reversed.
• D、Both hard drives have the cable select jumper in place.

第3题：

第4题：

After POST, the error message ‘Invalid system disk. Replace and press any key’ appears. Which of the following is MOST likely the cause?（）

• A、There is a non-bootable CD in the CD-ROM drive.
• B、There is a non-bootable DVD in the DVD-ROM drive.
• C、There is a non-bootable Blu-Ray in the Blu-Ray drive.
• D、There is a non-bootable floppy in the floppy drive.

第5题：

A user is trying to boot a desktop PC from their A: drive. Which of the following devices is the userdescribing？（）

• A、The floppy drive
• B、The hard drive
• C、The CD-ROM drive
• D、The DVD-ROM drive

第6题：

A user reports that after configuring the BIOS to boot to the hard drive first, the system still tries to boot from the optical drive. Which of the following is the MOST likely cause?（）

• A、Optical drive
• B、Power supply
• C、CMOS battery
• D、CD-ROM disk

第7题：

A technician replaced a floppy drive and now the front indicator light is consistently illuminated.Which of the following is the cause for this?（）

• A、It is a feature of new floppy drives.
• B、The data cable was put on backwards.
• C、A disk is being read by the floppy drive.
• D、The new floppy drive is defective.

第8题：

第9题：

A computer has been upgraded with a new hard drive and after reassembling the computer and turning the computer on， the drive LED remains lit and an error message during power-on self test （POST） states， ’No Drive Present.’ Which of the following would MOST likely be the cause？（）

• A、The motherboard was damaged and needs replacing.
• B、The floppy drive was not reconnected.
• C、A configuration disk was left in the floppy drive.
• D、The ribbon cable has been installed incorrectly.

第10题：

Bob, a technician, is adding a secondary IDE hard drive to an older system. After installation and the first boot, the drive is not showing in Disk Management. Which of the following is the MOST likely cause of the issue?（）

• A、The new drive’s jumper is set for master.
• B、The new drive is connected to the secondary bus as a slave drive.
• C、Both drives’ jumpers are set for cable select.
• D、The old drive’s jumper is set for master and the new drive is set for slave.