1.0 Mobile Devices Flashcards
1.1
hard disk drive (HDD)
A mass storage device. Can also refer to a hybrid drive or a solid-state drive (SSD).
1.1
solid-state drive (SSD)
A hard drive that uses flash memory instead of magnetic storage platters.
1.1
solid-state hybrid drive (SSHD)
A drive that combines a solid-state cache with magnetic capacity. It uses a memory manager to choose the most common files for the fast cache.
1.6
POP3
-What port
an email protocol used by client computers to retreive(download) email.
- TCP 110.
1.6
SSL(Secure Sockets Layer)
-Superseded by ___
Legacy protocol used for communication security over a computer network
-TLS(Transport Layer Security)
1.6
S/MIME(Secure/Multipurpose internet Mail Extensions)(protocol)
a security protocol for secure email connectivity.
1.1
Keyboards
An alphanumeric data entry device with a typewriter-style keyboard, additional functional, numeric, directional, and text-editing keys. It connects via a USB or PS/2 keyboard port.
1.1
pointing device
A general term for any mouse-type device.
1.1
smart card reader
A card reader that can be built into a laptop or connected via USB for reading smart cards.
PCI (Peripheral Component Interconnect)
a 32-bit I/O bus that provides a shared 33MHz or 66MHz data path between the CPU and peripheral controllers.
PCI (Payment Card Industry)
standards that protect a cardholder’s data.
1.1
mPCIe(mini PCIe) used for?
A slot used for diagnostic cards and for WiFi networking on recent laptops.
1.1
wireless (LAN) card
(WLAN)
A WiFi adapter or a USB-based wireless adapter that helps connect devices to wifi.
1.1
DC(Direct current)
characteristic of direct current is that it’s moving in a single direction with a constant voltage.
1.2
OLED( organic light-emitting diode)
-
-
a type of display that uses organic compounds that emit light.
- thin and light
- controls brightness of each pixel
1.3
Fn Function
a special key on laptop keyboards that, when pressed, enables other keys to perform additional tasks, such as adjusting screen brightness or toggling the Windows desktop to an external display.
1.3
docking station
-Example for a laptop?
A device that enables laptops and other mobile devices to use additional ports, like card slots, high-end audio and video ports,
1.3
cable lock
A lock that uses a security cable to help prevent the theft of a computer or another technology device. Sometimes called a Kensington lock.
1.3
rotating/removable screen
A feature of two-in-one devices that allows such a device to be used as both a tablet and a laptop.
1.4
VR/AR (virtual reality/augmented reality)
-Example?
Computer simulations projected into an eye-covering headset (VR) or images layered on camera captures of the real world (AR).
- doctor puts on special glasses e to see an X-ray that’s superimposed on the patient itself.
1.4
GPS(Global Positioning System)
an in-car navigation that gives you turn-by-turn directions on where you need to go
1.5
mini-USB
A Type B USB cable (USB 1) used in cameras, phones, etc
Micro-USB
(used by?)
Android + Windows
smartphones + tablets
1.5
USB-C connector
-What other function can it do?
USB-C, a 24 pin USB connector
-analog audio jack
1.5
Lightning connector
-How many pins?
The proprietary, reversible Apple iOS sync/charging USB 2.0 connector.
-8 pin
1.5
Hotspot
-What does it use?
A method for sharing a smartphone’s Internet access via WiFi.
1.4
IR(Infrared)
What’s it used for
short conectivity for remotes and sometimes Android devices
1.6
Pairing(Bluetooth)
The process of connecting two wireless devices together, such as a Bluetooth or wireless mouse or keyboard and its receiver.
1.6
PIN
-What wireless technology uses it?
similar to a password, a number that identifies an authorized user for items like smartphones and debit card transactions.
-Bluetooth
1.6
PRL(Preferred Roaming List)
A database in a wireless phone or another device that is used to select from available phone carriers for access to phone systems.
1.6
Baseband (radio processor)
Allows your phone to connect to your cellular provider and to use the internet
1.6
IMEI(International Mobile Station Equipment Identity)
a unique code for smartphones that allows carriers allow/disallow access
1.6
IMSI(International Mobile Subscriber Identity)
-Where is it stored(hardware)
an identity that is associated with a person,not with the mobile device
-In the SIM card
1.6
VPN(virtual private network)
Provides a secure connection over the internet
1.6
Bluetooth
-What type of network does it connect to?
A short-range wireless network used primarily by mobile devices.
-PAN network
1.3
Airplane mode
-What would be disabled?
A mobile device setting that turns off/on any RF wireless network
-Bluetooth and Wifi
1.5
NFC(Near Field Communication)
-How is it used?
a feature included in many mobile devices such as tablets for data transfer and shopping.
-Apple Pay and Itunes
Fitbit activity tracker
fitness monitor that connects using BlueTooth
What kind of network do tablets with detached keyboards use?
Bluetooth
Active matrix(flat panel displays)
uses a transistor for every dot on the screen.
DDR + DDR2 SODIMM have ___ pins
(Just 2)
200
DDR4 SODIMM has ___ pins
(think sum of it and 2)
260
DDR3 SODIMM has ___ pins
(think +1)
204
external SATA
(What is it used to connect to?)
Hard drives
1.3
What is this?
Pointing stick
1.6
tethering(private hotspot)
-3 examples of this
sharing of a mobile device’s Internet connection with other connected devices
-USB, Bluetooth, Wifi
1.1
Where is a a wi-fi card installed?
(laptop)
Mini PCie slot
-M.2. slot
1.5
What kind of cards can card readers take?
Chip cards
- Magentic strip cards
- NFC cards
2.2
Copper cables vulnberability is _____ , unlike ___ cables
interference
-optic
1.3
What is a laptop security slot
A slot into which a laptop cable lock fits.
1.5
You are preparing to upgrade the memory in your laptop. You have turned off the laptop and disconnected it from AC power. Which of the following is the next precaution you should take when upgrading laptop components?
Remove the battery from its compartment on the bottom of the laptop.
1.6
Who provides operating system updates for an Android phone?
The wireless carrier
1.1
Laptop hard drive sizes
- 8 inch
- 5 inch
1.5 IR(Infrared)
What is it used to control?
(can be used in smartphone)
wireless remote control your TV or home entertainment system
4.1
System shuts down after a short time(cause)
-
-
Power
- CPU
- system fan
Mobile devices use __ or __ to connectto audio headsets
Bluetooth connection
-3.5mm audio jack
1.4
Phablet
A smartphone with a 5.5-inch screen
1.1
Which of the following laptop components will you typically be able to access and service by removing panels from the bottom of the laptop? (Choose all that apply.)
-
-
-
Battery
- RAM
- Optical drive
- HDD/SSD
1.1
What should you do after you install a new drive?
Enter the BIOS/UEFI startup program to be sure that the new drive has been recognized by the system.
1.2
Digitizer(LED laptop)
The digitizer transmits pressure sensations on a touchscreen display with a stylus
1.1
You are attempting to repair your laptop computer. Which of the following replacement components must you generally buy from the manufacturer rather than from an electronics store? (Choose all that apply.)
Display
-Keyboard
1.1
You own a small catering business, and you have bought a card reader so that you will be able to accept credit cards. What kind of port should you use to attach your new card reader to your smartphone or tablet?
3.5mm audio jack
1.5
If you need additional storage space on your Android- or Windows-based smartphone, what type of storage media might be available on newer models?
MicroSD
1.6
Which of the following protocols are used for receiving email on a mobile device? Choose two.
POP3
IMAP4
On a Linux computer, what does the ls command do?
It displays the contents of a directory or folder.
1.1 AC(Alternating Current)
alternating current is constantly reversing direction as it flows through the electrical lines.
What memory form factors are used in laptops?
SODIMM and MicroDIMM
Due to size restrictions and the compact nature of laptop devices, this type of storage media has become less commonly found on new laptops.
optical drives
Which type of expansion card enables communication on 802.11 networks?
Riser card
A type of expansion card that enables communication over a cellular network
WWAN card
mini PCIe(what’s it found in)
laptops and mobile devices
What is the jack that connects to this port in a laptop?
DC power jack, used by a charger
Integrated GPU
-What’s different about it in a laptop?
-most difficult hardware to replace on a laptop computer
1.1
LCD(Liquid Crystal Display)
-Where are they commonly used
light is shining from a back light through liquid crystals and ultimately a colored filter to be able to show you this information on the screen.
-TV and computer screens
1.1 LED(Light emitting diode) monitor
LED backlight LCD monitor
1.2 OLED differences vs LCD
Works without backlight
Lower light brightness in comparison to LCDs
Better contrast ratio and color representation in comparison to LCDs
- 6 POP3S
- What port?
Secure version of POP3
-TCP 995
1.6
POP3S protocols
TLS/SSL(legacy)
a security protocol designed to provide communications security over a computer network
1.6
What are the basic settings required for configuring a POP3 connection?
server name,username,password, port number
1.6
IMAP
-What port?
Improvement in functionality over POP3
-TCP 143
- 6 IMAPS(secure version of IMAP)
- Port number
Uses SSL/TLS
-TCP 993
1.6 PRI
(Product Release Instructions)
They have specific radio settings, like ID numbers, network codes, and country codes so that your phone knows exactly how to use the wireless network
1.1
Firmware
software that is encoded into hardware
1.1 wireless(cellular) card
allows laptops access to a cellular network(3G, 4G, 5G)
Micro-DIMM
Smaller memory modules for use on laptops and mobile devices
1.1 optical media(laptops)
What is happening lately?
Appear less as laptops get smaller
1.1 laptops upgrade
(why is it hard to upgrade a CPU in a laptop)
the video controller and memory controller are very often part of the CPU to save space
- 1 LCD advantages
- What devices is it often used in due to these advantages?
lightweight and low power and cheaper
-laptops and mobile devices
1.1 LCD disadvantages
hard to match colors and goes black if backlight is missing
1.1 OLED advantages
doesn’t require a backlight and has good color representation
1.1 OLED disaadvantages
organic materail decays over time, is more costly and uses more battery
1.2 LED backlight(LCD use)
LCD display that is being backlit with LEDs
1.2 CCFL(Cold Cathode Fluorescent Lamps) backlight
older backlight that uses high voltage and is thicker
- 3 laptop FN dual displays
- What is the FN key combination?
one that allows you to control dual displays
-Fn + F
1.3 effect of closing a laptop tray
activitiy is suspended
- 3 FN control audio combo(mute/unmute)
- Lower/raise volume
FN + F1
-FN + ↑, FN + ↓
1.3 screen orientation(what kinds)
portrait or landscape
1.3 port replicator
Smaller versions of docking stations used for laptops
1.4 tablet form factor
about 7 inches diagonal or larger.
1.4 smart phone form factor
3.5 inch to about 6 inch diagonal device.
1.4 e-reader
a mobile device that is specifically created to read books.
1.4 e-reader screen
What screen do they use instead of an LCD screen?
electronic paper, a black and white screen that is designed to perform extremely well in direct light.
1.5 USB-A
(what’s it used for/with)
plugging into a wired connection on your computer
1.5 Lightning connector advantages over micro-USB
lightning charges faster and it charges on both sides
1.6 Bluetooth tethering(what happens )
A smartphone is tethered,creating a A Mobile Access Point(MAP)
- 5 (analog)audio jack
- Form factor and other name for it
-3.5 mm TRRS connector
1.5 POS mobile devices
credit card readers might connect through the audio jack that’s on your system. Or they might connect to the lightning port if you have an iOS device. There are also external credit card readers that connect to your phone through Bluetooth.
1.6 Bluetooth connection
What the name for when Bluetooth connects with other devices
-What pops up to confirm after “joining”?
Pairing
-PIN code
- 6 SMTP(Simple Mail Transfer Protocol)
- What port does it use?
allows you to send email from your local device to your ISP’s SMTP server
-TCP 25
1.6 SMTP with authentiation(port)
-
-TCP port 587
1.6 What are some data we need to sync
contact lists, the applications that we use, our email messages, bookmarks, documents, books, and even our passwords
1.6 Company synchronization
Microsoft _____
- Apple’s iOS
- Android(cloud based)
- Android(desktop)
Microsoft Exchange
- Microsoft Exchange
- Desktop app
1.6 Apple provides ___ to make backups of your iOS devices
Itunes
1.6 Ways mobile devices can be used with cars
Physical cable/wireless
- For an iOS device
- Android
plug in a cable or use Bluetooth to extend your phone functionality into the car itself.
- car may be able to use iOS CarPlay to perform this functionality.
- similar feature called Android Auto.
