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Comptia A+ 1101 > Domain 1: Mobile Devices > Flashcards

Domain 1: Mobile Devices Flashcards

1
Q

Laptop Battery Types

A

Lithium Ion/Lithium Ion Polymer; no memory effect and charging the battery diminishes capacity.

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2
Q

Most used component of laptop

A

Keyboard

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3
Q

Laptop key replacement

A

Can be delicate procedure, easily damaged. Check with manufacturers’ instructions.

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4
Q

SO-DIMM

A

Small Dual In-Line Memory Module; memory found in laptops.

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5
Q

Memory used in laptops and mobile devices often easy to install and replace unless…

A

Soldered to the motherboard

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6
Q

If laptop memory is soldered to the motherboard…

A

Can’t upgrade. Full system board replacement is required

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7
Q

Magnetic Disk

A

Laptop storage space with traditional spinning drive platters. (2.5” form factors, 3.5” for desktops).

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8
Q

SSD (Solid State Drive)

A

All memory, no moving parts. Quiet, faster access time, less latency, better performance.

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9
Q

M.2 Interface

A

Smaller SO-DIMM form factor. No SATA data or power cables, easy to install.

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10
Q

How to replace laptop storage

A

Open cover on back, open entire laptop, can be modular.

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11
Q

M.2 Interface replacement

A

One screw, similar to RAM

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12
Q

Switching from HDD to SSD

A

Moving from HDD to SSD is like getting a new, faster laptop.

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13
Q

Installing an OS on an SSD

A

Migrating from HDD to SSD
~move user documents between drives. Install any required applications.
~install can be time consuming

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14
Q

Image/Clone HDD

A

Migrating from HDD to SSD
~no OS installation required
~moves everything from one drive to the other

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15
Q

Image/Clone HDD Requirements

A

Imaging software needed, sometimes included with the SSD. Many commercial and open source options
~create Image file
~drive to drive image

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16
Q

802.11 Wireless and Bluetooth

A

Wireless Network Connectivity

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17
Q

802.11

A

~Local Area Network(LAN)
~High speed
~Internet access

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18
Q

Bluetooth (purposes)

A

~Personal Area Network(PAN)
~Short range
~Connect peripherals and other nearby devices

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19
Q

Mini PCIe types

A

Wireless or wireless personal

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20
Q

Biometrics

A

The identification of a user based on a physical characteristic(e.g. fingerprint, iris, face, voice)

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21
Q

Biometric Components

A

~Software or OS
~Also hardware for most options

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22
Q

NFC (Near-Field Communication)

A

A short-range wireless communication technology that allows two devices to exchange data by touching or being in very close proximity (common on mobile phones or watches)

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23
Q

LCD (Liquid Crystal Display)

A

Technology that produces an image by filtering light through a layer of liquid crystal cells.

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24
Q

LCD Advantages

A

Lightweight, relatively low power, relatively inexpensive

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25
Q

LCD Disadvantages

A

Black levels are a challenge, requires separate backlight, lights difficult to replace

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26
Q

TN LCD (Twisted Nematic)

A

Fast response time (good for gaming), low power draw, poor viewing angles (color shifts).

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27
Q

IPS LCD (In-Plane Switching)

A

Excellent color representation, more expensive than TN.

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28
Q

VA LCD (Vertical Alignment)

A

Good compromise between TN and IPS; good color representation, slower response time than TN.

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29
Q

OLED (Organic Light-Emitting Diode)

A

Display technology where an organic compound provides light for the screen, thus eliminating the need for a backlight/inverter.

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30
Q

OLED Advantages

A

Thinner and lighter screens, flexible and mobile, no backlight, tablets+phones+smart watches

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31
Q

Wi-Fi Antennas

A

Multiple antennas; Wifi main and Aux, Bluetooth.

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32
Q

WiFi Antenna characteristics

A

~wires wrap around laptop screen.
~primary connection
~follow same path as previous wires when replacing

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33
Q

Webcam

A

A video camera for computers typically used to provide real-time video footage

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34
Q

Microphone

A

~usually built into laptop display
~not good for non-casual use
~analog or USB microphones can help

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35
Q

CCFL (Cold Cathode Flourescent Lamp)

A

An older backlighting technology that uses one or two fluorescent tubes to light a monitor panel.
~older, less common, higher voltage, thicker

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36
Q

LED -Backlit LDC display

A

~Backlight is LEDs instead of fluorescent
~LEDs around the edge of the screen
~An array of LEDs behind the screen
~The latest laptops are LED-backlit

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37
Q

Additional components behind LCD

A

~inverters: turn DC power to AC power
~backlight
~fluorescent lamp/LED

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38
Q

Reason why we use inverters

A

CCFL backlights require AC power but backlight your laptop is using uses DC power.

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39
Q

Determining backlight failure

A

~shine flashlight at screen, it information visible problem may not be the backlight.
~CCFL problem then just replace inverter
~if other problem, replace display

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40
Q

Digitizer

A

Hybrid device using keyboard and tablet like display

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41
Q

Digitizer characteristics

A

~can use pen like (stylus) device for input
~high graphic and drawing resolution inputs

42
Q

Touchscreen Digitizer

A

Takes input from finger and convert to digital form. Can use keyboard, stylus or key presses all on same system

43
Q

Connecting mobile devices

A

Wired and wireless

44
Q

USB (Universal Serial Bus)

A

~primary wired connection type
~used for high speed communication
~used for charging/data transfer

45
Q

Micro-USB

A

A smaller version of the regular USB connect. The “B” version is commonly used for tablets, Android cell phones, and other small electronic devices.

46
Q

Mini-USB

A

A smaller version of the regular USB connector; it is also smaller than micro USB.

47
Q

USB-C

A

The newest + most versatile type of USB connector. 24 pin double sided connector

48
Q

USB-C can transmit the following…

A

DisplayPort, HDMI, Thunderbolt

49
Q

Lightning Connection

A

8 pin digital signal used by Apple devices

50
Q

Lightning Connector advantages

A

~High power output for phones and tablets
~can be inserted either way
~simple design

51
Q

DB-9 Interface

A

~9 pin connector
~also called DE-9
~commonly used for RS-232 signals

52
Q

RS-232

A

The recommended standard (RS) upon which all serial communication takes place on a PC.

53
Q

DB-9 Connector

A

Type of connector with 9 pins that’s commonly used in serial communication that conforms to the RS-232 standard

54
Q

NFC (uses)

A

Now used for mobile payment technology such as Apple Pay and Google Wallet. Access device or token as identification card to hold up to a door

55
Q

Bluetooth (definition)

A

Wireless PAN technology that transmits signals over short distances between cell phones, computers, and other devices.

56
Q

Hotspot

A

Your own personal wireless router.
~extend the cellular data network to all your devices.
~depends on phone type and provider
~may require additional charges and data cost

57
Q

Different type of Touchpens

A

Touch pen stylus, Capacitive stylus, Digital stylus

58
Q

Stylus

A

Allows you to activate interface without touching screen. Used for handwriting, note-taking, signatures, and easier to see screen and perform precise functions.

59
Q

Active Stylus/Digital Stylus

A

Provides more precise usability than capacitive touch pen. Includes pressure sensitivity. Must be compatible with tablet or device group (e.g. Apple device needs Apple stylus)

60
Q

Drawing Pad

A

Use an active stylus with external digitizer. Best for when using PC without any type of capacitive display or active touch screen to interact with.

61
Q

Reason to use drawing pad

A

Get same precise input as active stylus

62
Q

Trackpad

A

A touch-sensitive surface on which you slide your fingers to move the on-screen pointer. Can be used external using batteries or Bluetooth and functions can be customized.

63
Q

Enable and disable trackpad

A

Some laptops have function key to enable/disable track pad to avoid mistake inputs or clicks.

64
Q

Headsets

A

Hands-free audio. Earphones and microphone. Wired. Connects to 3.5mm TRRS connector (Tip Ring Ring Sleeve).
~Wireless are Bluetooth headsets

65
Q

Apple User Headsets

A

May use lightning port or bluetooth

66
Q

Speakers

A

An output device that allows you to hear voice, music, and other sounds from computer. Can be powered, wired, or wireless(using bluetooth)

67
Q

Docking Station

A

An external device that attaches to a mobile computer or device and contains a power connection and provides connections to peripheral devices.

68
Q

Reasons to use a docking station

A

~use external keyboard and mouse
~extend existing laptop interfaces
~avoid cable issues
~add additional functionality
~desktop adapter cards

69
Q

Port Replicator

A

A device uses with a laptop. It remains on the desktop with external devices connected to ports on it. A laptop then needs only one connection to the port replicator to ha e access to the peripherals

70
Q

What were the original 2G networks?

A

GSM(Global System for Mobile Communications) and CDMA (Code Division Multiple Access)

71
Q

Companies that uses GSM

A

AT&T and T-Mobile

72
Q

Companies that use CDMA

A

Verizon and Sprint

73
Q

GSM

A

Mobile networking standard, 90% of market (originally an EU standard), worldwide coverage, move your SIM card from phone to phone. Used multiplexing

74
Q

Multiplexing

A

People communicate at same time over the same frequencies.

75
Q

CDMA

A

Everyone communicates at the same time, each call uses a different code. The codes are used to filter each call on the receiving side

76
Q

3G (3rd Generation)

A

~introduced in 1998
~3G updates improved data speeds(usually several Mbps)
~Bandwity improvements allowed for new functionality(GPS, mobile television, video on demand)

77
Q

4G LTE (Long Term Evolution)

A

~covered standard (CDMA + GSM providers)
~Based on GSM and EDGE (Enhanced Data Rates for GSM Evolution)
~download rates of 150Mbps

78
Q

LTE Advanced (LTE-A)

A

Downloads rates of 300Mbps

79
Q

5G

A

Launched in 2020 worldwide. Significantly performance improvements.

80
Q

Improvements of 5G

A

Higher frequencies, eventually 10Gbps, slower speeds from 100-900Mbps.

81
Q

Significant IoT impact (5G)

A

~bandwidth becomes less of a restraint
~larger data transfers
~faster monitoring and notification
~additional cloud processing

82
Q

PRL (Preferred Roaming List) updates

A

CDMA networks. Allows phone to connect to the right tower (updated OTA; over the air)

83
Q

Bluetooth Pairing Process

A
  1. Enable Bluetooth on both devices
  2. Set devices to discoverable (search) mode
  3. Select discovered device (multiple devices may appear)
  4. Enter or confirm pin
  5. Test connectivity
84
Q

How does GPS (Global Positioning System) work?

A

Over 30 satellites in orbit, device needs to see at least 4 for accurate location.

85
Q

Other ways cell phones accurately give location

A

May determine physical location based on WiFi and cellular towers.

86
Q

MDM (Mobile Device Management)

A

Manage company-owned and user-owned mobile devices.

87
Q

BYOD

A

Bring Your Own Device

88
Q

Benefits of MDM

A

allows for centralized management of the mobile devices.

89
Q

Features of MDM

A

Set policies on apps, data camera, etc. Manage access control(e.g. screen timeout, PIN) Partition device

90
Q

Partition

A

Keeping user-data separate from company data

91
Q

Corporate Email configuration

A

(MDM config)
~user does not need to configure anything.
~MDM makes the changes on the device.
~Account details, server address, communication method.

92
Q

Two-Factor Authentication

A

Require specific authentication types(Biometrics, authentication app)

93
Q

Corporate Applications

A

~Allow/restrict app installation
~prevent unauthorized app usage

94
Q

Configuring a mobile device

A

Many settings are pre-configured(telephone/text messaging). Email, data synchronization

95
Q

Microsoft 365

A

Outlook, Exchange
-Microsoft email service
-same for Hotmail and Outlook.com

96
Q

Authenticate to Microsoft 365

A

Username, password. Select items to synch.

(Same process for Google Workspace)

97
Q

iCloud

A

Integrated into iOS and iPadOS
-provide a username and password

98
Q

Configuring iCloud

A

Select synch options(what to and not to synch), can be synced to macOS. Sign into device with credentials to access synced data

99
Q

iCloud Data Types

A

Mail, pictures, music, video, calender, contacts.

100
Q

Data caps and transfer costs

A

Downlaod data over Cellular vs WiFi (802.11)
~enable/disable network connections.
~control use of cellular downloads.

Comptia A+ 1101 (2 decks)

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