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A+ > 220-1101 Mobile Devices > Flashcards

220-1101 Mobile Devices Flashcards

1
Q

How do you fix a bad/broken battery

A
  • replace it with a battery from the manufacturer or from an aftermarket vendor
  • be careful and deliver to e-waste recycling or disposal site
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2
Q

How do you identify a swollen battery?

A
  • device not resting properly
  • screen does not sit flush
  • device bezel coming apart
  • problems with input devices
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3
Q

What can cause a swollen battery?

A

over-charging, perhaps due to circuit failure

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4
Q

What is an indicator of poor battery health?

A

A laptop battery that won’t charge up

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5
Q

What 3 things can cause poor battery health?

A
  • setting that limits how much charge the battery can hold to preserve lifespan
  • failing battery (battery has outlived its useful life)
  • A/C adapter isn’t charging (aka: improper charging)
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6
Q

How do you troubleshoot poor battery health? (3 steps)

A
  • check settings for charge limiting setting
  • remove battery to check A/C adapter
  • replace battery with known good battery
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7
Q

What 3 things do you look for when attempting to remove a laptop keyboard?

A
  • screws
  • clips
  • tiny cable
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8
Q

What are the (5) troubleshooting steps for keyboard issues?

A
  • ensure the system is otherwise running smoothly
  • If no keys work, keypad connector may be unseated
  • check NUM LOCK
  • sicking keys: check for debris or goo
  • doesn’t register presses or feels sicky: may have a switch knocked out of place
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9
Q

True/False: Evey laptop has the option to upgrade RAM

A

False

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10
Q

What benefit comes with adding RAM?

A

improved performance

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11
Q

How do you upgrade RAM?

A
  • refer to manufacturer’s website to determine compatible RAM
  • determine current RAM configuration
  • determine where the RAM is located
  • press out restraining clips, gently remove the old stick, and insert new stick
  • always remove electrical power and take out battery (or refer to documentation if battery is not removable)
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12
Q

What are the advantages and disadvantages of an HDD->SSD migration

A

it costs more per GB, but is dramatically faster and uses less electricity

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13
Q

What are SSD form factors and their characteristics?

A

M.2: newer and uses less space
mSATA: in-between M.2 and 2.5 inch in size
2.5in SATA: used in older laptops

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14
Q

What is the mSATA or M.2 drive replacement process?

A
  • most drives are located behind a plate on the bottom
  • remove the tiny retaining screw and pop the old drive out
  • put the new drive in its place and replace the retaining screw
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15
Q

What is the 2.5 HDD or SSD replacement process?

A
  • Remove HDD bay cover
  • Slide old drive out
  • Slide new drive in
  • Replace cover
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16
Q

Where do you typically find a laptop’s wireless card?

A

under a hatch on the bottom

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17
Q

What is the benefit to upgrading a laptop’s wireless card?

A

may upgrade laptop to newer standard

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18
Q

What is the process for replacing a laptop’s wireless card?

A
  • check with the portable manufacturer to get a Wi-Fi card that’s compatible
  • avoid ESD
  • remove the AC adapter and battery (or refer to documentation if battery is not removable)
  • remove the old wifi card
  • new card must be connected to motherboard in slot and via antenna connection/power cable
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19
Q

What are the motherboard connection standards for laptop wireless cards and which is newer?

A
  • M.2 (newer)
  • Mini-PCIe (older)
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20
Q

What are measurements of physical characteristics that are documented and verified through the use of scanners?

A

Biometrics

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21
Q

What can be used to match a physical characteristic of a user to a valid user account in order to authenticate?

A

Biometrics

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22
Q

What includes fingerprint and facial recognition?

A

Biometrics

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23
Q

When you log in to a portable device using a smart card reader and pin number, you are using what communication technology?

A

Near-field scanner

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24
Q

Most laptops use what LCD display technology for greater viewing angle and better color quality?

A

In-plane switching (IPS)

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25
Q

Which LCD display technology displays beautiful colors at slower speeds?

A

In-plane switching (IPS)

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26
Q

Which LCD display technology is found on older portables?

A

Twisted nematic (TN)

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27
Q

Which LCD display technology is fastest and offers adequate color?

A

Twisted nematic (TN)

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28
Q

Which LCD display technology is very uncommon on laptops?

A

Vertical alignment (VA)

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29
Q

Which LCD display technology falls between IPS and TN for color quality and speed?

A

Vertical alignment (VA)

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30
Q

Which laptop display technology doesn’t require a backlight, is thinner, has better blacks/contrast than LCD panels, is more expensive and is not as common on portable computers as LCD?

A

Organic light-emitting diode (OLED)

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31
Q

True/False: mobile display components are the same as desktop displays, except laptop displays may include antennas and camera.

A

True

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32
Q

Which laptop mobile display component controls the colors

A

LCD screen

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33
Q

Which laptop mobile display component illuminates the image?

A

backlight

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34
Q

What backlight do LCDs currently use?

A

light-emitting diode (LED)

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35
Q

How are most laptop monitors lit?

A

edge-lit

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36
Q

How do you troubleshoot laptop booting (you hear beeps and drives) but no display?

A
  • Make sure the display is turned on
  • If it is a 2-in-1, make sure the screen is properly attached and receiving power
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37
Q

How do you troubleshoot dim display?

A
  • Make sure the brightness is turned up
  • Check power saving settings
  • May be a failing backlight
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38
Q

If your laptop isn’t displaying an image, what can you do to log in?

A

Connect to an external monitor

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39
Q

How do you turn on an external monitor in the OS component?

A

Look for a function key and display settings

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40
Q

How do you troubleshoot a flickering display?

A
  • possibly bad device drivers or applications
  • loose connectors
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41
Q

How do you troubleshoot laptop disabled auto-rotation?

A
  • you can lock or unlock auto-rotation in settings
  • display in control panel
  • can manually change rotation in settings/display or possibly FN keys
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42
Q

Where is the Wi-Fi antenna typically located on laptops?

A

in the display

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43
Q

Where is the camera typically located on laptops?

A

in the display

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44
Q

What component on a laptop has an indicator light to show when it is operating, but can be disabled by malware, and is therefore a security risk?

A

Camera/webcam

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45
Q

Where is the microphone usually located on a laptop?

A

in the display

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46
Q

Which laptop component is a security risk because it has no indicator light?

A

Microphone

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47
Q

Which component is common with 2 in 1’s, but is becoming more common on laptops?

A

Touch screen/digitizer

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48
Q

What component detects the finger and signals the OS its location on a grid?

A

digitizer

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49
Q

How do you troubleshoot touch screen/digitizer issues?

A
  • check the screen for dirt, grease or liquids
  • check for unintentional touch
  • use touch-screen diagnostics/touch support calibration or reset
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50
Q

Where can you find touch-screen diagnostics on laptops?

A

hardware troubleshooting menus accessable through the BIOS

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51
Q

Where can you find touch support calibration or reset for Windows?

A

Mouse applet in the Control Panel

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52
Q

Where is the trackpad applet in Mac OS

A

system preferences

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53
Q

What is the component in displays that converts AC to DC and may be found in older laptops?

A

Inverter

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54
Q

What are the advantages and disadvantages of a Matte Display

A

Advantages: offers a good trade-off between glare reduction and color richness
Disadvantage: washes out in bright light

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55
Q

What are the advantages and disadvantages of a high-gloss Display?

A

Advantages: sharper contrast, richer colors, and wider viewing angles
Disadvantage: heavy reflections

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56
Q

How do some displays mitigate the heavy reflections in high-gloss displays?

A

Anti-reflective solutions

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57
Q

Which USB connection method is the industry standard?

A

Type-C

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58
Q

Which USB connection method is quickly becoming the de facto standard port on Android devices?

A

Type-C

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59
Q

Which mobile devices connection methods are not keyed?

A

Type-C and Lightning

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60
Q

Which connection method can support USB 3.1 technology with transfer speeds up to 10 GBps?

A

Type-C

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61
Q

True/False: Type-C is synonymous with a specific version of USB

A

False

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62
Q

Which mobile devices connection method is Apple’s proprietary port used for all wired accessories?

A

Lightning

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63
Q

Which connection method has most iPads switched to?

A

Type-C

64
Q

How many pins does the lightning port have?

A

8-pin

65
Q

Which program licenses the Lightning port to other manufacturers?

A

Made for iPhone (MFi)

66
Q

True/False: Apple devices can detect a true (licensed) Lightning connector?

A

True

67
Q

Which wireless technology creates electromagnetic fields when devices are close to each other

A

Near-field communication (NFC)

68
Q

How far does NFC work?

A

typically less than a few inches

69
Q

Which wireless technology can exchange contact info, small files, and even payment transactions via Apple/Google pay

A

Near-field communication (NFC)

70
Q

Which wireless technology is the most common way mobile devices expand their physical capabilities?

A

Bluetooth

71
Q

Which wireless technology can connect headsets, mice, keyboards and speakers?

A

Bluetooth

72
Q

What is the process for adding a Bluetooth device?

A
  • enable Bluetooth on the mobile device
  • power on the other bluetooth device (or make sure bluetooth is on)
  • return to mobile device to discover and select the bluetooth device for pairing
  • enter the appropriate PIN code
  • test connectivity
73
Q

If you can’t find a bluetooth device to pair it, what may be the issue?

A

Many devices run with Bluetooth off to conserve battery life

74
Q

What happens if a Bluetooth device doesn’t have a PIN?

A

not all devices require PIN code, but requires a different pairing action

75
Q

What is a small device that shares access to cellular technologies such as 4G, 4G LTE via Wifi, and 5G?

A

Mobile Hotspot

76
Q

What is it called when a cellular phone is used as a mobile hotspot?

A

Tethering

77
Q

Where is the most likely place to by a Mobile Hotspot?

A

Cellular providers

78
Q

What is different between using data on your mobile phone verses tethering?

A

Many carriers separate out and limit the amount of data that can be used for tethering.

79
Q

How do you configure a cell phone to be a hotspot?

A
  • enable cellular data connection
  • turn on additional hotspot setting that causes the device to broadcast a Wi-Fi network
  • optional: configure a password
80
Q

What is an advanced version of the traditional stylus?

A

Touch pen

81
Q

What is Apple’s touch pen called, which only works with iPadOS?

A

Apple Pencil

82
Q

What are 2 common use cases for touch pens

A

handwriting notes and draw artworks

83
Q

Which features do modern smartphones cameras usually include?

A

HDR, light compensation, and AI (image processing software)

84
Q

True/False: higher end and midrange devices often have more than one camera lense

A

True

85
Q

What mobile camera technology makes sure you capture faster-moving objects and action shots, as well as slow motion video?

A

“bursts” of shots

86
Q

How do mobile cameras edit video on-the-fly, add light-filter effects, cleaning up shots, and even adding special effects?

A

Using apps

87
Q

Which mobile accessory offers legacy and modern single and multi-function ports

A

Docking station

88
Q

Which connection standards are more common on modern docks?

A

USB 3.x and Thunderbolt 3 & 4

89
Q

True/False: docking stations for mobile devices are similar to portable docking stations?

A

True

90
Q

What are docking stations for mobile devices most often used for?

A

tablets and credit card readers

91
Q

What mobile device accessory provides support for connectors that the laptop lacks like docking stations, but in a smaller more portable format?

A

Port replicator

92
Q

What are smaller port replicators known as?

A

dongles/USB-C dongles

93
Q

What technology allows a user to connect their charger to a port replicator?

A

Pass-through charging

94
Q

True/False: Over time, the terms docking station, port replicator and dongle have become blurred?

A

True

95
Q

What is an external device that attaches to a mobile computer or other device, has a power connection, and allows connection to peripherals? Used at work desks.

A

Docking station

96
Q

What is an external device that provides connection to peripherals through ports? Good for travelers.

A

Port Replicator

97
Q

What device is good for when you don’t need access to a number of ports at once?

A

USB adapter

98
Q

What device moves the cursor as you move your fingers over the device?

A

Touchpad

99
Q

What term refers to using mouse, touchpad, or finger movements and mouse clicks to perform a function?

A

Multi-touch gesture

100
Q

Where do you adjust touchpad settings in windows?

A

Through the mouse control applet or settings app

101
Q

What is the most common input device for laptops?

A

Touchpad

102
Q

What is the biggest advantage of a touchpad?

A

fewer moving parts, so they last longer

103
Q

What is a digitizer or pen tablet enables users to paint, ink, pencil or otherwise draw on a computer?

A

Drawing pad

104
Q

What does a drawing pad typically use for input?

A

stylus or touch pen

105
Q

How does a drawing pad typically connect?

A

USB or wireless connection

106
Q

How do you install a drawing pad?

A

install drivers, should be included in the box

107
Q

What configuration options typically exist for drawing pads?

A

adjust pressure, sensitivity of the stylus, configure buttons and set the portion of the screen to which the tablet can draw

108
Q

What is a common variation of drawing pads?

A

signature pads

109
Q

How do you enable or disable cellular data?

A
  • swipe down from the top of the screen to check for a quick option, labeled with something like Data or Cellular
  • alternatively, use the settings app, menu option that says data or cellular
110
Q

What a is a priority ordered list of other carrier networks and frequencies a device should search for when the device can’t locate its home carrier’s netowrk?

A

Preferred Roaming List (PRL) updates

111
Q

How are PRL updates usually handled?

A

Automatically,
- updated via the phone’s cellular connection (baseband or over-the-air updates)
-firmware updates during normal operating system
-firmware upgrades via synchronization

112
Q

Preferred Roaming Lists (PRLs) are for what kind of network?

A

Code Division Multiple Access (CDMA)

113
Q

What software combines a specialized app on the devices and specialized infrastructure to manage BYOD?

A

Mobile Device Management (MDM)

114
Q

What kind of policies inform corporate verses end-user device configuration options?

A

MDM policies

115
Q

What is the counterpart to Mobile Device Managment where the organization is concerned just with a specific app or group of apps?

A

mobile application management (MAM)

116
Q

In MDM and MAM, what is a collection of configuration and security settings that an administrator has created in order to apply settings to a particular categories of users of devices?

A

Profile

117
Q

How are MDM and MAM profiles created?

A

MDM software or a program such as the Apple Configurator

118
Q

What data format are profiles?

A

typically text-based files, usually in eXtensible Markup Language (XML)

119
Q

How do you configure corporate email on Apple devices?

A

go through settings app, tap mail, and then tap the accounts options. Tap the add account option.

120
Q

How do you configure exchange email options on Apple devices?

A

go through settings app, tap mail, and then tap the accounts options. Tap the add account option. tap the exchange option, type email address, domain, username, password and description

121
Q

How do you set up corporate email on Android devices?

A

gmail can talk to other email services for setting up exchange, POP3 or IMAP4 accounts

122
Q

POP3 port?

A

110

123
Q

IMAP4 port?

A

143

124
Q

SMTP port?

A

25

125
Q

Secure POP3 port?

A

995

126
Q

Secure IMAP port?

A

993

127
Q

Secure SMTP port (2)?

A

465 or 587

128
Q

What is two factor authentication also known as?

A

Multi-factor authentication

129
Q

What are the 3 different factors commonly used in two-factor authentication?

A
  • knowledge: something you know
  • ownership/possession: something you have
  • inherence: something the user is or something they do
130
Q

What are the less common two-factor authentication methods?

A

location
temporal (time of day)

131
Q

How are corporate applications typically installed on mobile devices?

A

third-party app stores
sideloading Android package (APK)

132
Q

How is mobile device syncronization typically set up?

A
  • install the app
  • enter the e-mail and password
133
Q

True/False: most mobile device syncronization allow users or administrators the ability to make adjustments, including to sync settings?

A

True

134
Q

Which mobile device syncronization system is works well with iOS and iPad OS devices and is a one stop shop for e-mail, messaging and online storage?

A

iCloud

135
Q

With mobile device syncronization systems, what data are you typically looking to back up?

A
  • Mail
  • Photos
  • Calendar
  • Contacts
136
Q

How will you know if an employee is approaching their mobile device data limit?

A

The carrier will usually notify the user by e-mail or text message when data is close to limit

137
Q

What three things will typically happen to a employees cellular connection when an employee exceeds their mobile device data limit?

A

The carrier may:
- stop cellular data
- throttle speed
- bill user for additional data

138
Q

How do you prevent employees from exceeding their mobile device data limit (5 ways)?

A
  • configure data hogs like cloud storage apps to use wifi
  • monitor data use
  • disable cellular data usage
  • pay to raise cap
  • know your data limits and what happens then they’re exceeded
139
Q

What would you suspect if the following happened?
- suddenly has terrible call quality on Skype while using cellular, but works fine on Wifi
- employee hasn’t gotten an important email on her device, despite good connection

A

Mobile device has reached data limit

140
Q

What is a connection that sends data one bit at a time?

A

Serial interface

141
Q

What are examples of a serial interface?

A
  • RS232
  • Infrared
  • Adapters that convert another port into a serial port
142
Q

What setting, when on, allows applications to query the location of the device?

A

Location services

143
Q

What are low accurracy and high accuracy location methods?

A
  • less accurate (low power) methods: nearby celluar and wifi-networks
  • high accuracy (high power) methods: GPS
144
Q

How do you manage location services to minimize the service’s impact to battery life while maintaining functionality of most apps.

A
  • best solution is to set per-app restrictions. review configuration settings for apps that use location services and disable to ones that don’t need to have immediate location data.
145
Q

What are 3 common mobile device synchronization services?

A

Microsoft 365
Google Workspace
iCloud

146
Q

What is the process for using an active authenticated session with a common service to sign into other services?

A

Single sign-on (SSO)

147
Q

What are examples of security measures to use with synchronization services?

A
  • username and password
  • encrypt stored data
148
Q

What is the advantage to data syncronization cloud services?

A

can update anywhere

149
Q

What are the disadvantages to data synchronization cloud services?

A
  • no longer fully in control
  • limits on type and amount of data that can be stored
150
Q

What sync issues (4) may you run into?

A
  • partial sync
  • authentication issues
  • OS version issues
  • incorrect configuration settings
151
Q

How can you identify partial sync and resolve?

A

Partial sync may cause duplicated messages. A solution is to move to a place with a stronger signal.

152
Q

Between docking station and port replicator, which is best for professionals who need their work desk while traveling?

A

Docking Station

153
Q

Between docking station and port replicator, which is best for travelers who just need to access email and communicate with others?

A

Port Replicator

154
Q

What is a feature in cellular phones that enables cell phone companies and government agencies to use the ID or MAC address to pinpoint where a phone is at any given time?

A

geotracking

155
Q

What can cause a trail of ghost cursors behind the real cursor as you move it?

A

an aging display or improperly configured refresh rate

156
Q

What can cause the cursor on a laptop to move erratically or slowly drift in a steady direction?

A

track pad damage

157
Q

What can make working on smartphones and tablets very difficult to work on, along with many laptop and desktop systems?

A

They are sealed

A+ (10 decks)

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