IT 105 Final GMU Exam Questions With Correct Answers
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Course
GMU IT 105
Institution
GMU IT 105
IT 105 Final GMU Exam Questions With
Correct Answers
Expansion Ports - answerPorts in the system unit of digital devices used for connecting
cables and various add-ons to expand the options for input , output, and storage
Local Bus - answerCarries data at high speeds between the processor and R...
IT 105 Final GMU Exam Questions With
Correct Answers
Expansion Ports - answer✔✔Ports in the system unit of digital devices used for connecting
cables and various add-ons to expand the options for input , output, and storage
Local Bus - answer✔✔Carries data at high speeds between the processor and RAM
Expansion Bus - answer✔✔Carries data between RAM and external devices that are connected
to ports on the system unit
Hot-Plugging - answer✔✔When a peripheral device is connected or disconnected while the host
device is operating
Bluetooth - answer✔✔A common wireless technology for connecting peripherals
What makes Bluetooth good for mobile devices? - answer✔✔It low-power so it is ideal for
mobile devices that don't have big batteries
Bluetooth's Range: - answer✔✔30 feet
Bluetooth's Transfer Speed: - answer✔✔Slow compared to wired connections (~3Mbps)
USB 2.0 Transfer Speed: - answer✔✔~480 Mbps
FireWire Transfer Speed: - answer✔✔~800 Mbps
USB 3.0 Transfer Speed: - answer✔✔~5Gbps
Thunderbolt Transfer Speed: - answer✔✔~10 Gbps
Device Driver - answer✔✔Software that helps a peripheral device establish communication with
its host device
Computer Display - answer✔✔A device that simply displays text and images
A computer display is classified as a(n): - answer✔✔Output device
Touchscreens are classified as - answer✔✔Both input and output devices
Built-in display devices for laptops, tablets, and handheld devices, but these devices may also
accept a standalone display device
LCD(Liquid Crystal Display) Technology: - answer✔✔Technology that produces an image by
filtering light from a backlight through a layer of liquid crystal cells(One Red, One Blue, and
One Green crystal)
LED(Light-Emitting Diode) Technology: - answer✔✔Uses LEDs as the video display. This
technology is replacing CCFL backlighting technology
What is the source of backlighting in a LCD screen? - answer✔✔Cold Cathode Florescent Lamp
(CCFL)
The liquid crystal cells used in display devices do not directly emit light, so ____ is necessary. -
answer✔✔Backlighting
Factors that affect image quality: - answer✔✔Screen size, response rate, dot pitch, and screen
resolution
Screen Size - answer✔✔The measurement in inches from one corner of the screen diagonally
across to the opposite corner
Response Rate - answer✔✔The time it takes for one pixel to change from black to white then
back to black
Display devices with fast response rates display a crisp image with minimal ______? -
answer✔✔Blurring or "ghosting" of moving objects
What is Response Rate measured in? - answer✔✔Milliseconds
For gaming systems, a response rate of ____ or less is desirable. - answer✔✔5ms
What is Dot Pitch measured in - answer✔✔Millimeters
Screen Resolution - answer✔✔The number of horizontal and vertical pixels that a device
displays on the screen.
What is an alternate way of expressing resolution? - answer✔✔Pixels per inch (ppi)
Examples of Touchscreen Technology - answer✔✔-Tablets
-Handheld devices
-Retail Store Self-Checkout devices
-ATMs
Touchscreen Gestures: - answer✔✔Tap, drag, pinch
Types of Touchscreen Technology - answer✔✔Resistive and Capacitive
Resistive Touchscreens - answer✔✔Contain a base panel and a flexible top layer separated by a
small space. Pressing slightly on the top layer brings it into contact with the base layer, and the
point of contact is collected and passed to the processor
Resistive technology is susceptible/not susceptible to: - answer✔✔Susceptible: Sharp Objects
Not Susceptible: Dust or Water
Capacitive Touchscreens: - answer✔✔Contains a transparent panel coated with a thin layer of
electrically conductive material. Because the human body is an electrical conductor, touching the
screen produces a change in the electrical current. A special capacitive stylus or touchscreen
gloves can also be used to operate this type of screen.
Capacitive Screens can interpret: - answer✔✔A single touch or more complex inputs such as
handwriting.
How does one input text when no physical keyboard is available? - answer✔✔Virtual Keyboard
Graphic Hardware Required for Display Devices: - answer✔✔Integrated Graphics and
Dedicated Graphics
Integrated Graphics - answer✔✔Built into a computer's system board
Dedicated Graphics - answer✔✔Mounted on a small circuit board called graphics card (or video
card)
Video Memory - answer✔✔Stores screen images as they are processed but before they are
displayed
Difference between Integrated Graphics and Dedicated Graphics - answer✔✔Integrated
Graphics have image data processed by the main CPU, then sent to the graphics circuits that
stream the image to the display device.
Dedicated Graphics have image data processed by the GPU, freeing the CPU for other tasks.
Types of Printer Technology: - answer✔✔Ink Jet or Laser
Multi-function Printers can also serve as: - answer✔✔-Scanners
-Copiers
-Fax Machines
How does an Inkjet Printer work? - answer✔✔It has a nozzle-like print head that sprays ink onto
paper to form characters and graphics
Why are ink jet printers the most popular types of printers? - answer✔✔They are inexpensive
and produce both color and black-and-white printouts. They work well for most home and small
business applications. Ink jet technology also powers many photo printers, which are optimized
to print high-quality images produced by digital cameras and scanners.
Laser Printer Technology: - answer✔✔Uses the same technology as a photocopier
Advantage to Laser Printers over Ink Jet: - answer✔✔Laser Printers are faster
Laser Printers are more expensive than Ink Jet because: - answer✔✔It is more complex than Ink
Jet Technology
Main Application for Laser Printers: - answer✔✔Business - to print in large volumes
Types of Laser Printers: - answer✔✔Basic - Black and White
Color - more costly
Internet of Things (IoT) - answer✔✔A network of IoT devices that are connected to Internet and
output the data that is captured by their sensors such as the temperature sensor inside your home
thermometer, or the GPS sensor in your smart phone device.
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