1.0 Mobile Devices Flashcards
(29 cards)
What are two types of laptop batteries?
Lithium-ion (Li-ion) and Lithium-ion polymer (LiPo). They both have no memory effect
What does SO-DIMM stand for?
Small outline dual in-line memory module. It’s memory used in laptops and mobile devices
What are two types of laptop storage?
Magnetic disk and solid-state drive (SSD). Can’t forget M.2 drives, a smaller, modular version of SSD
How can you migrate a user from one drive to another?
- Install an OS on the SSD and move files manually, cumbersome process.
- Image/clone the hard drive device, then move image to new SSD. Requires imaging software
What are three different ways to send data wirelessly (hint: wireless)
- 802.11 or WAN, wireless area network
- Bluetooth or PAN, personal area network
- WWAN, wireless wide area network (cellular)
Besides biometrics, what’s another common way to authenticate yourself to an OS?
NFC or near-field communication. Used on phones, smart watches, and ID cards
What are types of laptop displays?
LCD, liquid crystal display
–TN, twisted nematic display (gaming)
–IPS, in plane switching (graphics/publishing)
–VA, vertical alignment (kind of middle ground)
OLED, organic light emitting diode
–light and great color representation
What is a laptop component that helps it receive network connection?
Antenna, typically on high point of display for good signal
What kind of backlighting might you find in an old laptop?
CCFL, cold cathode fluorescent lamp. Newer laptops will use LED-backlit LCD display
What do LCD displays need in order to function?
A backlight. Some laptops have inverters that convert DC to AC power to turn on the backlights
How can you verify is backlight is broken or not?
Shine a flashlight on it to see if color shows or not
What component lets a stylus send information to the display?
A digitizer, used commonly on laptops, tablets, or hybrid devices. A touchscreen digitizer is another example of this
What is the primary wired connection type for mobile phones?
USB, universal serial bus. Different types include micro B, type A, USB-C. Can transmit signals like DisplayPort, HDMI, and Thunderbolt
What was the main serial connection type before USB?
DB-9, also called DE-9. Transmits RS-232 signal, the industry standard since 1969
Why would someone want to use a stylus, as opposed to their fingers, on a touchscreen?
It allows them to see the screen while they’re writing. A more advanced writing tool is called a digital stylus or active stylus
What’s one benefit to using an external digitizer?
Support across many different OS
What is another name for the 3.5mm audio jack, and what does it stand for?
TRRS, tip-ring-ring-sleeve connector
When you have multiple workspaces, what’s one way to eliminate the constant plugging and unplugging of a laptop?
Docking station. It uses an external keyboard and mouse to extend existing laptop interfaces
What’s a smaller alternative to a docking station?
Port replicator. Usually connects using USB and does not typically have an expansion card option
Where did the name “cellular” come from when referring to cellular networks?
We separate the land into cells by using cell towers
What are the two types of cellular networks?
GSM, global system for mobile communications
CDMA, code division multiple access
What kind of cellular network allows you to move your SIM card from phone to phone?
GSM, used by AT&T and T-Mobile. (SIM card stands for subscriber identity module.) Each user gets a slice of time
How does a CDMA network work?
Everyone communicates at the same time using a different call code. Your device filters out calls that aren’t important
What is LTE?
Long term evolution. 4G network technology that converged standards between GSM and CDMA, allows more data throughput
