1. Chapter 10 Mobile, Linux, and OS X Operating Systems
PC Support & Repair
Chapter 10
Mobile, Linux, and OS X
Operating Systems
5 days

2. Objectives
After completing this chapter, you will meet these objectives:
Explain how to configure, secure and troubleshoot mobile, Mac, and Linux operating systems.
Explain the purpose and characteristics of mobile operating systems.
Explain methods for securing mobile devices.
Explain how to configure network connectivity and on mobile devices.
Explain the purpose and characteristics of Linux and OS X operating systems.
Explain how to troubleshoot Mobile, Linux, and OS X operating systems.

3. Mobile operating systems
10.1

4. Open vs Closed Source Open Source Closed Source
User can analyze & modify code of OS
Android
Closed Source
OS’ source code not published or accessible
iOS
Both have SDKs to develop apps
There is another way to install apps on Android mobile devices. Apps can be downloaded from different sources on the Internet and transferred to a mobile device through Wi-Fi, Bluetooth, data cable, or other methods. This is called sideloading. Sideloading an application is not recommended, because many sources for apps cannot be trusted. Only install apps from trusted sources and developers.
Note: iOS devices do not support sideloading by default

5. App Sources Download Android apps from trusted sources
Less chance of it having malicious code
Google Play
Amazon App Store
iOS can only get apps from Apple App Store
Windows only from Windows Store
Apps “pulled” from store
Can be “pushed” to a phone from computer or iTunes
Sideloading- download Android app from Internet & transfer to phone via Wi-Fi, Bluetooth, or cable

6. Android Interface Navigation buttons on screen (usually) Apps Widgets
Icons are shortcuts to the app
Widgets
Display info or functions on home screen
Weather, clock, Wi-Fi, Power control
Folders
Can put multiple apps into a folder
Drag one app onto another
Google Assistant
Widgets- rather than going into settings menu
On Android devices, if a folder has two apps and one is removed, the folder is removed, but the remaining app replaces the folder on the home screen.
To uninstall an app, go to Play Store or App Manager in Settings. Holding it and dragging it to remove, just removes the shotcut.

7. iOS Interface No navigation icons Home button No widgets, only apps
Double-press for multitasking bar
Hold for Siri
No widgets, only apps
No app shortcuts; it’s actual app
Folders
Hold app until jiggles & drag onto another
Alert Badges- icon w/ #
Siri

8. Windows Interface Tiles Folders Physical navigation buttons
Apps that display info & are Interactive
Tap to expand
Can rearrange & resize
Can be pinned to start; removed w/out uninstalling
Folders
Tap, hold & drag onto another
Physical navigation buttons
Cortana

9. Review- 5Q What is a safe place to get Android Apps?
Google Play
Which mobile OS does not use physical navigation buttons?
Android
On iOS, an app is showing a small number. What does it mean?
Alert badge
What is Windows virtual assistant?
Cortana
How are apps represented in the Windows phone interface?
Tiles

10. Mobile Device Screen Accelerometer Brightness
Sensor that measures the tilting motion and orientation of a mobile device
Can enable/disable auto-rotation
Brightness
Uses the most battery power
Auto-brightness setting

11. Mobile Device GPS Other than navigation…
Geocaching- mapping app to find hidden containers
Geotagging- embeds location into photo/video
Search Results- displays results based on proximity
Device tracking
Make sure location services are on
Note: Some Android and iOS devices do not have GPS receivers. These devices use information from Wi-Fi networks and cellular networks, if available, to provide location services.

12. Other Mobile Features Wi-Fi Calling Mobile Payments VPN
Contactless NFC- waving phone near payment system
VPN

13. Failed Login Attempts Android iOS
Device locks after 4-12 failed attempts
Unlock using Gmail account from setup
iOS
Disabled after 5 failed attempts
6th = disabled for 1 minute
Beyond 6th= additional time
10th time= all data deleted
Restore through iTunes

14. Remote Backup Backed up to the cloud Android iOS
Automatically- calendar, mail, contacts
iOS
5GB for free iCloud
Android- some system settings, chrome browser data, hangouts chat log, apps (keeps track), photos if you enabled it

15. Remote Lock & Wipe Remote Lock (Lost Mode in iOS)
Locks device remotely
Can display a message, keep from ringing, play sound
Remote Wipe (Erase Phone in iOS; Erase in Android)
Deletes all data & goes back to factory state
Note: For these remote security measures to function, the device must be powered on and connected to a cellular or Wi-Fi network.

16. Rooting & Jailbreaking
Gain access to OS code
Voids warranty for iOS devices
Benefits:
Customizable GUI
Improve speed & responsiveness of device
Overclock CPU & GPU
Enable features disabled by carrier
Remove bloatware
Increases risk of virus infection

17. Activity
Manual Setup
Backup Data

18. Review- 4Q If an Android device is locked, how can you unlock it?
Through Gmail
What happens on an iOS device on the 10th failed login attempt?
Data deleted
In order to remote lock or wipe, what 2 things must apply?
Phone on & connected to a network
If a device has no GPS, how can it find where you are at?
WiFi & cell network

19. Network connectivity & email
10.3

20. Configuring
Display name, address, protocol, server names, username & password
Protocols:
POP3
only stored on client device
IMAP
Synchronizes folders between the server and client
Syncs information about read/unread status, attachments and folders across all devices
SMTP
S/MIME
Encrypts s using certificates
SSL (secure transfer)
Exchange (Outlook , contacts, calendar)
S/MIME stands for Secure/Multipurpose Internet Mail Extensions. To put it simply, it is a universal standard for securely signing and encrypting . It is essentially used to prove that the came from the person says it is from.
POP3: Logging into each device, you will see lots of unread s with no indication of which you deleted, read, flagged or filed Any folders you created and organize on one device won't be replicated on the other devices.
IMAP: Syncs across all devices

21. Activity

22. Activity- ANSWERS

23. Linux & os x operating systems
10.4

24. Introduction UNIX Where’s Linux used? Non-proprietary OS
Linux, OS X, Android & iOS based on UNIX
Where’s Linux used?
Embedded systems, wearables, PCs, supercomputers
Thanks to Android!
Ubuntu Desktop- pic

25. Linux GUI Launcher- dock with apps
Top Menu Bar- like the Windows Taskbar (running apps, notifications)
System & Notification Menu- notifications and shut down, volume, clock
Dash Search Box- click the Ubuntu button in Launcher to search, view recently used apps
Lenses- fine tune search results

26. OS X GUI OS X 10.10 is called Yosemite.
Apple Menu- system preferences, power
Application Menu- active application menu
Menu Bar- everything across the top
Notification Center Icon-
Spotlight Icon- searching apps, docs, images, etc.
Status Menu- date, time, features like Bluetooth
Desktop-
Dock- frequently used and running apps. Can force quit apps by right-clicking on them

27. Linux & OS X CLI Interact with the Kernel through the Shell
Kernel is the core
Allocates resources & manages file system
Get to the CLI with terminal emulation program
Linux- Terminator, xterm
OS X- Terminal
Shell/terminal

28. Activity
Lab Install Linux in a Virtual Machine and Explore the GUI

29. Vulnerabilities Prevent infection fro malicious software
OS updates (patches)
Firmware updates
Antivirus/antimalware software

30. Activity
Lab Working with the Linux Command Line (limited/modified)

31. Basic troubleshooting for mobile, linux & OS x
10.5

32. Activity
Lab – Troubleshooting Mobile Devices

33. Chapter 10 Mobile, Linux, and OS X Operating Systems
PC Support & Repair
Chapter 10
Mobile, Linux, and OS X
Operating Systems