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1. Stephen's computer has been running a little slowly, so he is performing some maintenance procedures. Which computer system maintenance task can help improve file access performance?
a) Use a SCSI drive instead of a SATA drive
b) Defragment the drive using the following command: defrag c: -w
c) Defragment the drive using the following command: fdisk -d -w c:/
d) Use a SATA drive instead of an EIDE drive |
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2. A resource conflict exists on your system Which step will resolve the problem yet still allow you to work on the system?
a) Partition the hard drive.
b) Reboot the system.
c) Modify IRO settings.
d) Remove the hard drive. |
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3. Which mass storage device interface is currently the de facto standard for connecting internal PC-based drives, does not require explicit termination, and is connected using a cable that somewhat resembles a small category-5 Ethernet cable?
a) FireWire
b) Serial Advanced Technology Attachment (SATA)
c) Small computer system interface (SCSI)
d) Universal Serial Bus (USB) |
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| b) Serial Advanced Technology |
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4. What type of audio/video interface has become the de facto standard for transmitting high-resolution digital video and audio data with only one connection?
a) Digital Video Interface (DVI)
b) Video Graphics Array (VGA)
c) High-Definition Multimedia Interface (HDtv11)
d) External Serial Advanced Technology Attachment (eSATA) |
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5. When a PC computer device wants to communicate with the processor, the system resource that it uses is:
a) IRQ.
b) I/0.
c) DMA.
d) PIO |
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6. Which choice best describes a motherboard?
a) It converts analog signals to digital signals.
b) It provides a backup for all data.
c) It is the main circuit board in a computer.
d) It stores all information processed by the computer. |
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7. Which hardware component includes at least one transceiver to ensure that data is converted to the appropriate format so that it can be transmitted between a computer and a network?
a) A small computer system interface (SCSI)
b) A serial ATA (SATA) interface
c) A network interface card (NIC)
d) A Universal Serial Bus (USB) interface |
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8. You work at an IT help desk. You are discussing a system issue with a co-worker, who asks you to explain the difference between Direct Memory Access (DMA) and programmed input/output (PIO). How do they differ?
a) DMA is an obsolete technique for accessing memory, whereas PIO is not.
b) PIO is used by the hard disk, whereas DMA is used only by the peripheral controllers.
c) PIO can bypass the processor to directly access memory, whereas DMA cannot.
d) DMA can bypass the processor to directly access memory, whereas PIO cannot. |
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9. What is direct memory access (DMA)?
a) The ability for an application to access another application without addressing RAM
b) The ability for an application to access RAM without accessing the CPU
c) The ability for an application to access the hard drive without accessing the PIO
d) The ability for an application to access IROs without accessing RAM |
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10. Nancy needs to change a resource assignment on her Windows system Which utility would she use to do this?
a) Windows Explorer
b) Command Prompt
c) Windows Device Manager
d) Disk Defragrnenter |
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11. You are receiving read/write errors when you try to save files on your Windows-based laptop Which maintenance task could you perform to try to resolve this issue?
a) chkdsk command
b) Disk cleanup
c) fsck command
d) Disk defragmentation |
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12. Which choice best describes an interrupt request (IRQ)?
a) A process by which a device can directly address system memory
b) A vendor-independent interface for attaching a hard drive
c) A line used to notify a device that the processor wants the device's attention
d) A memory location that allows the system processor and system devices to communicate |
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13. You have found that both your new srnartphone and your camera cannot capture videos and photographs quickly. They both delay the start of video capture, even though they are using standard settings. Some apps on the smartphone seem to run slowly, too. However, your srnartphone can still play tv1P3s well. These tv1P3s are stored on the same SD card as your videos and photographs. Which of the following solutions will resolve this problem?
a) Use a USB SD card reader to download and upload videos.
b) Upgrade the SD card to one that operates at faster speeds.
c) Use disk-defragrnenting software on the SD card to ensure efficient file allocation.
d) Upgrade the firmware on the devices so that they use the latest and fastest software to process files. |
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14. Which statement is true regarding the motherboard?
a) It should always be touching grounded metal.
b) It should be kept in an environment free from flowing air.
c) It should always be exposed to static electricity.
d) It should be fastened to the chassis via plastic tabs. |
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15. Sioux uses an older computer at work, where she frequently downloads and saves company files. She recently noticed that she was running low on disk space, so she deleted many old files that she no longer needed. But she noticed that it still takes a long time to open or save documents to her hard drive. Which maintenance task should Sioux perform to improve this situation?
a) fdisk command
b) Disk cleanup
c) chkdsk command
d) Disk defragrnentation |
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16. Four hardware devices need to communicate with the CPU simultaneously. Therefore, each device will need to issue:
a) a communication (COM) port.
b) an interrupt request (IRQ).
c) an input/output (I/O) address.
d) direct memory access (DMA). |
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17. Which of the following should you do to clean a DVD or CD-ROM drive?
a) Use rubbing alcohol and a mildly abrasive scrubbing device to clean the laser.
b) Carefully remove the laser and ensure that it is not coated with dust.
c) You cannot clean a DVD or CD-ROM drive: you must replace it.
d) Brush away or vacuum dust without contaminating the disc carrier area or laser. |
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18. Which statement accurately describes a network interface card (NIC)?
a) A device that transmits only TCP/IP networking information back and forth between networks
b) A device that converts digital network transmissions to analog computer transmissions
c) A device that transmits information to and from a network in serial using a transceiver
d) A device that converts analog network transmissions to digital computer transmissions |
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