CompTIA A+ 3

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CompTIA A+ 3
2011-09-09 13:26:02

Study for CompTIA
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  1. What advantages do laptops have over desktops?
    • Portability
    • Quality of construction
    • Desktop replacement
  2. What advantages do desktops have over laptops?
    • Cost
    • Performance
    • Expandability
  3. What is a laptop's display?
    LCD (Liquid Crystal Display)
  4. What is a laptop's case frame?
    The metal reinforcing structure inside the laptop that provides rigidity and strength and that most components mount to.
  5. What is the laptop's case?
    The plastic cover that surrounds the components and provides protection for the elements.
  6. What is a clamshell design?
    The laptop has two halves, hinged together at the back. Usually, the display is the top half and everything else is in the bottom half.
  7. What is a daughter board?
    A circuit board that connects directly to the motherboard
  8. How are laptop processors different from desktop processors?
    • Smaller and less powerful
    • Operate at lower voltages
    • Have more advanced pwer-down or sleep modes
    • Often soddered directly to the motherboard
  9. What is the process by which the processor slows sown to conserve power?
  10. What do chipsets like the Intel Pentium M include?
    • Built-in video processing
    • Networking capabilities
    • Ability to run on lower power
  11. Which memory type has the smallest form factor, MicroDIMM or SoDIMM?
  12. Which type of display has the best performance charateristics, a transistor behind each pixel, and requires large amounts of pwer to operate?
    Active matrix
  13. Which type of display has two rows of transistors, has poor response to rapid changes, and uses less power?
    Passive matrix
  14. What gives a proportion of how wide the screen is versus how tall it is (image width divided by image height)?
    Aspect ratio
  15. What aspect ratio do standard monitors and TVs have?
  16. What aspect ratio do high definition TVs and monitors have?
  17. What aspect ratio do wide screen TVs and monitors have?
  18. Which early display standard supported 65,536 colors in 800x600 res and 256 colors in 1024x768 res?
    XGA (eXtended Graphics Array)
  19. Which display standard is common on 14- and 15-inch LCD laptops and has a res of 1400x1050?
    SXGA+ (Super eXtended Graphics Array)
  20. Which display standard has a res of 1600x1200?
    UXGA (Ultra eXtended Graphics Array)
  21. Which display standard has a res of 1920x1200 and a 16:10 aspect ratio?
    WUXGA (Widescreen Ultra eXtended Graphics Array)
  22. What term describes when you get image distortion because the LCD monitor is not compatible with the video card?
    Native resolution
  23. What is the measure of the ratio between the lightest color and the darkest colort the screen is capable of producing?
    Contrast ratio
  24. What can you use to clean a LCD screen?
    Damp cloth or LCD cleaner
  25. What pointing device is basically a mouse turned upside down?
  26. What device is a pad of touch-sensitive material and includes two buttons for left- and right-clicking?
  27. What pointing device was released with the IBM ThinkPad series and uses a small rubber tipped stick?
    Touchpoint (finger mouse)
  28. What type of laptop was designed to be used like a notebook?
    Tablet PC
  29. What standard was organized to provide a way of expanding portable computers?
    PCMCIA (Personal Computer Memory Card International Association) or PC Card
  30. What are the three major PC Cards (and slots) used for today?
    Type I
    Type II
    Type III
    • Type I: memory cards
    • Type II: modems, LAN adapters, sound cards, SCSI controllers, etc.
    • Type III: hard disks
  31. PCMCIA need which software in order to operate?
    • Socket Services: BIOS-level interface
    • Card Services: interface between apps and Socket Services
  32. What is an ExpressBus used to expand?
    USB (daisy chain up to 127 devices)
  33. What communication port is used to wirelessly (line of site) transfer data at up to 4Mbps?
  34. What standard is used to wirelessly (line of site) transfer data at up to 16Mbps?
    IrDA (Infrared Data Association) standard
  35. What is a collection of IEEE 802.11x standards?
    WiFi (wireless fidelity)
  36. Which WiFi standard provides speeds up to 11Mbps and operates on the 2.4GHz band?
  37. Which WiFi standard is backwards compatable, provides speeds up to 54Mbps and operates on the 2.4GHz band?
  38. Which WiFi standard is not backwards compatable, provides speeds up to 54Mbps and operates on the 5GHz band?
  39. Which WiFi standard is expected to be backwards compatable and should provide speeds over 200Mbps?
  40. Which wireless standard can reliably transfer small amountso data quickly over short distances (30ft) and uses little power?
  41. What can certain desktops connect to that is an extension of the motherboard?
    Docking station
  42. What reproduces the functions of ports on the back of a laptop, so that peripherals don't have to be unplugged every time a laptop is moved?
    Port replicator
  43. What allows you to plug full-size devices into ports and take your laptop with you?
    Accessory bay/media bay/laptop drive bay
  44. What type of battery can be recharged only a finite number of times before it develops a memory and must be recharged on a special deep-charging machine?
    Nickel-Cadmium (NiCad)
  45. What other batteries don't usually develop a memory and can be recharged many times although they are expensive?
    Lithium Ion (LiIon) and Nickel Metal Hydride (NiMH)
  46. What standard gives power management to the OS and allows laptop power management features to be used on desktops? The motherboard, CPU, and OS must support it.
    Advanced Configuration and Power Interface (BIOS-ACPI)
  47. What are the four power level states, global states? (G0, G1, G2, G3)
    • G0 Working: all devices are running at full power or low power/off for certain devices
    • G1 Sleeping: divided into four submodes
    • G2 Soft off: Click Turn Off Computer or Shutdown.
    • G3 Mechanical off: Complete power loss (unplugged)
  48. What are the four submoes of G1 Sleeping? (S1, S2, S3, S4)
    • S1: CPU stops executing, cache is flushed, pwer is still provided to CPU and memory, unused devices are powered down, power-hungry
    • S2: Processor is powered down. (Not typically used)
    • S3 Standby/Suspend: Maintain power only to RAM. Saves running aps info.
    • S4 Hibernation: Info in RAM is written to HD. Takes longer to restore.
  49. What are the four processor states? (C0, C1, C2, C3)
    • C0: operational state
    • C1 Halt: powered-down state, but processor can be returned to action nearly instantaneously
    • C2 Stop-Clock: uses less power than C1. Processor is sill visible to aps but takes longer to wake
    • C3 Sleep: cache is flushed, takes a few seconds for the processor to be available
  50. What are the four device states? (D0, D1, D2, D3)
    • D0 Fully On: full operating state
    • D1 and D2: intermediate power states. Device specific
    • D3 Off: complete power down, not responsive
  51. What states are sublevels to processor and device states that are designated P0-Pn, where n can be 1-16? (Larger numbers indicate greater power savings as well as more latency to become fully operational.)
    Performance States
  52. Under which category in the Control Panel should you look to manage power options?
    Performance and Maintenance
  53. What is the best way to clean laptop screens?
    Damp, soft cloth or cleaner designed for LCD screens
  54. You have a floppy drive in you laptop's mod bay, and you laptop is on. What is the recommended first step in removing it so you can put a CD-ROM drive in instead?
    Use the Safely Remove Hardware icon to stop the device.
  55. Whic laptop accessory allows you to power you laptop from a car or airplane?
    DC adapter
  56. If the video on you laptop is not working, what shoul you do to troubleshoot it?
    • Toggle the video function key
    • Try using an external monitor
  57. The display on you laptop appears warped and fuzzy. You plug in an external monitor, and the image on it is fine. What is the most likely cause of the problem?
    The LCD display
  58. The display on you laptop appears warped and fuzzy. You plug in an
    external monitor, and the image on it is also warped and fuzzy. What is the most likely cause of the problem?
    The video driver