Learning unit 7

Question 1

Four most popular mobile OSs:

Answer 1

-Android OS by Google
Based on Linux

-iOS by Apple
Based on macOS

-Windows 10 Mobile by Microsoft
Based on Windows 10

-Windows 10 Mobile by Microsoft
Based on Windows 10

Question 2

Discuss Android managed by Google

Answer 2

-Based on Linux and uses a Linux kernel
-Linux and Android are open source

Question 3

Releases of Android

Answer 3

-Jellybean
-KitKat
-Lollipop
-Marshmallow

Question 4

Things that the Android OS can do

Answer 4

-Use an embedded browser

-Manage a database using SQLite

-Connect to Wi-Fi, Bluetooth, and cellular networks

Question 5

Functions of a digital assistant

Answer 5

responds to a user’s voice commands with a personable, conversational interaction to perform tasks and retrieve information

Question 6

Google’s approach to security with Chrome OS:

Answer 6

-Sandboxing
-Verified boot
-Power washing
-Quick updates

Question 7

Differences between open source and closed source

Answer 7

Open source:
can be obtained from many sources

Closed source:
only have access to APIs, which are calls to the OS

Question 8

Disadvantages of open source

Answer 8

-No assurance of quality
-The market is not always convenient for developers

-Many variations of Android exist, creating incompatibilities

Question 9

Information that might be used when a connection is first made

Answer 9

-IMEI – a unique number that identifies each mobile phone or tablet device

-IMSI – a unique number that identifies a cellular subscription for a device or subscriber

-ICCID – identifies the SIM card,

Question 10

USB connectors used

Answer 10

microUSB, miniUSB, and USB-C

Question 11

Define Bluetooth

Answer 11

a short-range wireless technology to connect two devices in a small PAN

Question 12

Define IR (infrared)

Answer 12

a wireless connection that requires an unobstructed “line of sight” between the transmitter and receiver within 30 m of each other

Question 13

Define Near Field Communication (NFC)

Answer 13

a wireless technology that establishes a communication link between two NFC devices

Question 14

Difference between syncing and backups

Answer 14

Syncing mirrors app data and other content among your devices and/or the cloud that use the same Apple or Google account

Backups are copies of app data, configuration settings, and other content stored in case you need it to recover from a failed, lost, or corrupted device

Question 15

Back-Up and Recovery options:

Answer 15

-File-level backup

-Partial image-level backup

-Combination of file-level and partial image-level backups

Question 16

Lock methods to control access to the device

Answer 16

-Screen lock

-Swipe lock

-PIN lock

-Passcode lock

-Pattern lock

-Fingerprint lock

-Face lock

Question 17

Screen lock options:

Answer 17

-Restrict failed login attempts
Specify that data be erased after a certain number of failed login attempts, or block further attempts

-Full device encryption
Encrypts all the stored data on a device

-Multifactor authentication
Requires two forms of authentication

Question 18

Software can help secure data through

Answer 18

-OS updates

-Antivirus/anti-malware

-Trusted sources

-Firewalls

Question 19

Discuss BYOD (Bring Your Own Device)

Answer 19

-An employee or student is allowed to connect his own device to the corporate network

-For security purposes, an organization configures the person’s device before allowing it to connect to the network

-Utilizes security profiles

Question 20

Define security profiles

Answer 20

a set of policies and procedures to restrict how a user can access, create, and edit the organization’s resources

Question 21

Symptoms that might indicate malware might be at work:

Answer 21

-Power drain, slow data speeds

-Dropped phone calls or weak signal

-Unintended Wi-Fi and Bluetooth connections

-Unauthorized account access

-Unauthorized location tracking

Question 22

General steps for removing malware from a mobile device

Answer 22

-Uninstall the offending app

-Update the OS

-Perform a factory reset

Question 23

tips to keep a mobile device clean

Answer 23

-Keep OS updates current

-install an anti-malware app

Question 24

Define Internet of Things (IoT)

Answer 24

Devices connected to the Internet for a specific purpose

Question 25

What wireless technologies are used by smart home devices

Answer 25

Z-Wave and Zigbee
Wi-Fi and Bluetooth

Question 26

You can enhance a smart home network with

Answer 26

-Smart speaker
-Controller hub

Question 27

Solving short battery life

Answer 27

• Disable wireless connections and close apps when you’re not using them
• look into a replaceable battery

Question 28

Solving Inaccurate touch screen response

Answer 28

Remove protective cover

Question 29

Solving unresponsive touch screen

Answer 29

-Clean the screen with a soft, damp cloth

-Don’t use the touch screen when your hands are wet

-Restart the device