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  • Question
  • Which hardware component controls serial port communications?


  • Options
  • A. ROM BIOS
  • B. CPU
  • C. DMA823
  • D. UART 16550
  • E. None of the above

  • Correct Answer
  • UART 16550 


  • Computer Hardware problems


    Search Results


    • 1. You're on your PC at midnight and an electric storm pops up. What's the best way to protect your PC.

    • Options
    • A. you don't worry; you have a lightning rod on your house
    • B. you don't worry; you've got a surge protector on your PC
    • C. you don't worry; you've got a surge protector on your PC and phone line to your modem
    • D. unplug the PC and remove phone line from the modem
    • E. stop standing on it
    • Discuss
    • 2. What is the file extension used by WIN95 to back up registry file when windows starts?

    • Options
    • A. .dat
    • B. .dao
    • C. .bak
    • D. .tmp
    • E. None of the above
    • Discuss
    • 3. Which is the easiest component to environmentally recycle?

    • Options
    • A. Motherboards
    • B. CMOS batteries
    • C. Toner cartridges
    • D. Cathode ray tubes
    • E. None of the above
    • Discuss
    • 4. How much video RAM is needed to display 1024x768 at 24-bit color?

    • Options
    • A. 1MB
    • B. 4MB
    • C. 8MB
    • D. 512KB
    • E. None of the above
    • Discuss
    • 5. When configuring a new network interface card for installation, which of the following would be a valid I/O address?

    • Options
    • A. 378
    • B. 2F8
    • C. 3F8
    • D. 360
    • E. None of the above
    • Discuss
    • 6. Which of the following is a type of preventative maintenance used on a hard drive?

    • Options
    • A. Disk check diagnostics
    • B. Head alignment diagnostics
    • C. Initializing
    • D. Uninstalling programs
    • E. None of the above
    • Discuss
    • 7. A customer has just installed a new cd-rw. the system was working fine before the installation, but now the cdrom does not work, what should you suggest that the customer do?

    • Options
    • A. flash or upgrade the BIOS
    • B. check the CONFIG.SYS
    • C. add cdrw in the device manager
    • D. check the jumper setting on the cd-rw
    • E. None of the above
    • Discuss
    • 8. What is the best ground for a conductive work bench?

    • Options
    • A. AC outlet
    • B. Ground to bench
    • C. To the motherboard
    • D. To the PC's Chassis
    • E. None of the above
    • Discuss
    • 9. Whenever you have a hardware resource conflict, it will more likely be an IRQ conflict rather than an i/o conflict because:

    • Options
    • A. there are a lot more I/O addresses than IRQs.
    • B. the BIOS sometimes has more of a problem controlling IRQs
    • C. I/O addresses cannot conflict
    • D. software tends to correct I/O conflicts
    • E. software tends to mess up IRQs
    • Discuss
    • 10. In ROM BIOS, the acronym BIOS stands for:

    • Options
    • A. Basic Intuitive Output Set
    • B. Basic Input Organizational System
    • C. Basic Input Output System
    • D. Basic Industry Operating System
    • E. None of the above
    • Discuss


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