| 1. Identify three things that may cause monitor flicker. |
A slower refresh rate then what is recommended, poor cable connections , and having items around the monitor with high electrical noise. |
| 2. Describe what to do if you have just spilled soda pop on your keyboard. |
Either you can simply replace the keyboard or you can try rinsing it under running water but you must make sure it dries thoroughly before using it. |
| 3. Explain how to check that chips on a video card are properly seated in their sockets. |
Remove the card from its slot then use a screwdriver to press firmly on each corner of each chip. |
| 4. When troubleshooting problems with a monitor in Windows XP, why would you enter Safe Mode? |
Because it allows the OS to select a generic display driver and low resolution. |
| 5. Describe how to boot Windows XP into Safe Mode. |
When you first start up your computer, before the OS screen there will be a screen where you can enter some utilities, this is where you press F8 to enter safe mode in Windows XP. |
| 6. Why would an external modem cost more than an internal modem? |
Not found in chapter but external modems cost more because there is more to them meaning they are in their own case and they require a cable to connect to the computer with where an internal modem does not. |
| 7. Name three possible ways a scanner might interface with a motherboard. |
USB, FireWire (IEEE 1394), Serial |
| 8. By definition, what system resources does COM1 use? COM2? COM3? COM4? |
COM1- IRQ4, I/O address 03F8-03FF COM2- IRQ3 I/O address 02F8-02FF COM3- IRQ4 I/O address 03E8-03EF COM4- IRQ3 I/O address 02E8-02EF |
| 9. What is the display resolution for standard VGA settings? |
Up to 640x480 |
| 10. What is the maximum length of a serial cable? |
50ft according to RS-232 standards |
| 11. To what does RS-232 refer? |
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| 12. How many pins are on a typical serial port? |
25 |
| 13. What is the name of a barcode reader that is a gun-type reader that can be handheld and is often used at a checkout counter? |
CCD (Charge-Couple Device) |
| 14. What is the purpose of a keyboard wedge? |
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| 15. What is the name of the technology within the chipset that controls the speed of serial ports? |
UART (universal asynchronous receiver-transmitter) 16550 |
| 16. Why might you choose to use ECP mode for your parallel port rather than EPP mode? |
To increase the port's transmission speed and improve system performance by bypassing the CPU through the use of a DMA channel. |
| 17. When might you need to disable ECP mode for a parallel port? |
When the use of ECP mode causes DMA conflicts. |
| 18. How would you disable a serial port on a motherboard? |
Through CMOS setup. |
| 19. What Windows OSs support USB? Include the OS version numbers where that information is important. |
Windows 95 OSR 2.1, though Windows 98 provides much improved USB support, and all workstation versions of Windows thereafter expect Windows NT. |
| 20. What is the maximum speed of Original USB? Of Hi-Speed USB? |
Original USB's max speed is 12Mbps; Hi-Speed USB supports speeds up to 480Mbps. |
| 21. What is the maximum length of a USB Hi-Speed cable? |
5 meters (16 feet, 5 minches) |
| 22. What are two other names for FireWire? What is the highest data throughput approved for FireWire? |
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| 23. When selecting a motherboard, why would you prefer to use PCI Express for the video card rather than AGP? |
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| 24. What is the most important disadvantage of using biometric devices to authenticate a person to have access to a system? |
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| 25. What criteria affect how much video RAM is needed for a video card to hold one frame buffer? |
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| 26. Give three examples of monitor screen sizes. How are monitor screen sizes measured? |
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| 27. What are two advantages of setting an LCD monitor to run in its native resolution? |
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| 28. What type of CRT monitor can offer a variety of refresh rates? |
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| 29. How many pins are used in the IEEE 1394 connector that supports the IEEE 1394b standard? |
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| 30. How many keyed notches does an AGP universal slot have? |
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| 31. What makes a device an ergonomic device? |
when a device designed for safe and comfortable interaction between human beings and machines. HP |
| 32. How many pins are there on a DIN connector and a PS/2 connector for a keyboard? |
din has 6 and pin has 9. HP |
| 33. What three colors are used to build all colors on a color monitor screen? |
Red, Blue, Green. HP |
| 34. Which gives better image quality, a .25-mm dot pitch monitor or a .28-mm dot pitch monitor? Why? |
So 25mm dot pitch is better because the horizontal resolution of the screen with the smaller dot pitch will be sharper. If you compare a screen display with a .25mm dot pitch on a 17-inch monitor to one with a .28mm dot pitch on a 21-inch monitor, you may not notice any loss of clarity. This is because larger monitors have a larger dot pitch. HP |
| 35. If a mouse begins to be difficult to operate, what simple thing can you do to help? |
if is a roll ball mouse clean it!!! HP |