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Professor Messer > 1.0 - Mobile Devices > Flashcards

1.0 - Mobile Devices Flashcards

1
Q
  • SSD
    Does it move
    Connected via…
    Does it make sound
    Fast or slow
A

(Solid-state drive)
– All memory, no moving parts
– Silent, fast access time, less latency
– 2.5 inch form factors
- connected with Sata cable

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2
Q

M.2
Where is it located
Smaller the ssd

A

M.2 is a slot on the motherboard
– Smaller form factor
– No SATA data or power cables
– Easy to install and replace

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3
Q

how is a keyboard connected

A

A few screws and a single ribbon cable
connect an external USB keyboard

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4
Q

SO-DIMM
Where is it located
It’s a type of___

A
  • Small Outline Dual In-line Memory Module
  • Memory used in laptops and mobile devices
  • easily inserted into the memory slot on the motherboard
  • It is a type of RAM
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5
Q

A hard drive is a ___ and ___disk
It’s size in laptop vs desktop
Does it spin
They store ____

A

Magnetic disk
– Traditional spinning drive platters
– 2.5 form factors (3.5 inch for desktops)

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6
Q

How do you replace a Hard Drive, SSD, and M.2

A
  • All internal
    – Open a cover on the back
    – Open the entire laptop
  • Can be very modular
    – Two screws and the drive slides out
  • M.2 drives are even easier
    – One screw - similar to RAM installation
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7
Q

What are the 2 ways of
Migrating from HDD to SSD

A
  • Install an OS on the SSD
    – Move user documents between drives
    – Install any required applications
    – Can be time consuming
  • Image/clone the HDD
    – No OS installation required
    – Move everything from one to the other
  • Imaging software needed
    – Sometimes included with the SSD
    – Many commercial and open source options
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8
Q

802.11
What is LAN

A

– Local area network (LAN)
– High speed, Internet access

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9
Q

Bluetooth
PAN

A

– Personal area network (PAN) - Short range
– Connect peripherals and other nearby devices

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10
Q

what is NFC

A

Near-field communication (NFC)
* Short-distance networking
– 4 centimeters or less
– Data transfers or authentication

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11
Q

What is LCD

A
  • Liquid crystal display
    – Light shines through liquid crystals
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12
Q

Advantages and disadvantages of LCD

A
  • Advantages
    – Lightweight
    – Relatively low power
    – Relatively inexpensive
  • Disadvantages
    – Black levels are a challenge
    – Requires separate backlight
    – Florescent, LED, etc.
    – Lights are difficult to replace
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13
Q
  • TN (Twisted Nematic) LCD
    Is it fast
    How are the viewing angles in regards to color
A

– The original LCD technology
– Fast response times (gaming!)
– Poor viewing angles - color shifts

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14
Q
  • IPS (In Plane Switching) LCD
    How is the color
    It’s more expensive then what
A

– Excellent color representation
– More expensive to produce than TN

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15
Q
  • VA (Vertical Alignment) LCD
    How fast is it
    Is it a compromise
A

– A good compromise between TN and IPS
– Good color representation
– Slower response times than TN

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16
Q

What is OLED
Does it have glass
Does it need a backlight
How is the color
Is it expensive

A
  • Organic Light Emitting Diode
    – Organic compound emits light when
    receiving an electric current
  • Thinner and lighter
    – Flexible and mobile - no glass needed
  • No backlight
    – The organic compound provides the light
  • Tablets, phones, smart watches
    – Very accurate color representation
    – A bit higher cost than LCD
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17
Q

Where are WIFI Atenas located

A
  • Multiple antennas
    – WiFi main and aux / Bluetooth
  • Antenna wires wrap around the laptop screen
    – It’s up high!
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18
Q

What is CCFL backlight
Does it require a lot of power
Is it a thinner or thicker display
Is it common

A

Cold Cathode Fluorescent Lamp
A display backlight
– Higher voltage and power needed
– Added thickness to the display
– No longer a common backlight
– Older laptops will use these

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19
Q

what is * LED

A

Light Emitting Diode
– Backlight is LEDs instead of florescent
– LEDs around the edge of the screen
– An array of LEDs behind the screen
– The latest laptops are LED-backlit

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20
Q

what is an inverter

A

Turn DC into AC for the backlight

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21
Q

Digitizer

A
  • Use a pen-like device as input
    – Stylus input - Useful for graphical input
22
Q

USB

A
  • Universal Serial Bus
    – High-speed wired communication
    – Used for charging and data transfers
23
Q
  • Micro-USB
A

– A smaller USB connection
– Common now worldwide
* Older devices may use Mini-USB
– Slightly larger

24
Q

how many pins in a USB-C

A
  • 24-pin double-sided
25
Q

what acts as a * Acts as a USB 2.0/3.0/3.1/4 connection

A

USB-C

26
Q

usb c can also be used as a

A

– DisplayPort, HDMI, Thunderbolt

27
Q

Lightning

A

– 8-pin digital signals
* Apple proprietary
– Higher power output for phones and tablets
– Can be inserted either way

28
Q

A DB-9 connector
What kind of connector
Used for what signals
Standard since what year
Used for what 3 things now

A
  • serial connector
  • used for RS-232 signals
  • industry standard since 1969
    • Now used as a configuration port
      – Switches, routers, firewalls, etc.
      – Use a USB to DB-9 converter cable
29
Q

Active stylus

A

A more advanced writing tool
* The stylus communicates directly to the device
– Pressure sensitivity, programmable buttons, etc.
* Must be compatible with the tablet
– e.g., Apple iPad uses an Apple Pencil

30
Q

Drawing pad

A
  • Use an active stylus with an external digitizer
    – Very precise input
31
Q

what kind of connector for headsets

A

TRRS (tip-ring-ring-sleeve) connector

32
Q

Port replicator

A
  • Port replicator
    – Similar to a docking station
    – Does not commonly have an expansion card option
    – Usually connects using USB
33
Q
  • 2G networks
A

– GSM - Global System for Mobile Communications
– CDMA - Code Division Multiple Access
* Poor data support
– Originally used circuit-switching
– Minor upgrades for some packet-switching

34
Q

Global System for Mobile Communications
Used by what cell providers
Move what from phone to phone
What does it use m—

A
  • Used by AT&T and T-Mobile in the United States
    – Move your SIM card (Subscriber Identity Module) from
    phone to phone
  • Original GSM standard used multiplexing
    – Everyone gets a little slice of time
35
Q
  • Code Division Multiple Access
    Is a cell network used by
    Each call uses a ___ to filter each call
A

– Each call uses a different code
– The codes are used to filter each call on the receiving side
* Used by Verizon and Sprint
– Handsets are controlled by the network provider

36
Q

3G technology Bandwidth improvement allowed new functionality what year

A

– GPS
– Mobile television
– Video on demand
– Video conferencing
– Introduced in 1998

37
Q

4G and LTE stand for

A

long term evolution

38
Q

4g and lte was based on

A

– Based on GSM and EDGE
(Enhanced Data Rates for GSM Evolution)

39
Q

4G and LTE – Standard supports download rates of

A

150 Mbit/s

40
Q

LTE Advanced (LTE-A)
– Standard supports download rates of

A

300 Mbit/s

41
Q

5G
* Fifth generation cellular networking
– Launched worldwide in

A

2020

42
Q

5G speeds
How many gigabits
And mbits

A

Eventually 10 gigabits per second
– Slower speeds from 100-900 Mbit/s

43
Q

5g improvements include
What becomes less of a constraint
____ data transfers
Additional ___ processing

A

– Bandwidth becomes less of a constraint
– Larger data transfers
– Faster monitoring and notification
– Additional cloud processing

44
Q

what is PRL what does it do

A

(Preferred Roaming List)
* Allows your phone to connect to the right tower
Can be updated over the air (OTA)

45
Q

What is OTA

A

over the air

46
Q

what does GPS stand for
who created it
how many satellites in orbit

A

(Global Positioning System)
* Created by the U.S. Department of Defense
– Over 30 satellites currently in orbit

47
Q

how many satellites of gps to have Precise navigation

A

4

48
Q

– Determine physical location based on

A

GPS, WiFi, and cellular towers

49
Q

MDM

A

(Mobile Device Management
Manage company-owned and user-owned mobile devices
* Set policies on apps, data, camera, etc
Manage access control
– Force screen locks and PINs on these single user devices

50
Q

Microsoft 365
offers
3 things

A
  • Outlook, Exchange Hotmail

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