CompTIA A+ 1102 Mobile Devices

Question 1

Failed Screen Lock Attempts (iOS/Android)

Answer 1

iOS
- erase everything after 10 failed attempts

Android
- lock the device and require Google credentials or else the device is wiped

Question 2

FDE (iOS/Android)

Answer 2

iOS
- data is encrypted using your passcode

Android
- encryption tool is integrated into version 5.0 and later
- probably turned on by default

Question 3

Mobile Device Firewalls

Answer 3

• not included on mobile phones
• most activity initiates outbound, not inbound
• useful in enterprise environments

Question 4

App Issues (Troubleshooting)

Answer 4

• restart the device
• stop the app and restart
• or update the application

Question 5

App Fails to Update (Troubleshooting)

Answer 5

• manually update
• restart the device

Question 6

OS Fails to Update (Troubleshooting)

Answer 6

• check available storage
• check available bandwidth
• connect to wifi
• try a different network connection
• reboot

Question 7

Battery Life Issues (Troubleshooting)

Answer 7

• caused by bad reception or an aging battery
• disable unnecessary features
• check application battery usage

Question 8

Random Reboots (Troubleshooting)

Answer 8

• check the OS and application versions
• perform a hardware check
• check the battery health
• contact tech support for options
• crash logs should be on the device

Question 9

Intermittent Connectivity (Troubleshooting)

Answer 9

• move closer to the access point
• try a different access point

Question 10

No Wifi Connectivity (Troubleshooting)

Answer 10

• check/enable Wifi
• check security key configuration
• hard reset your device

Question 11

Developer Mode

Answer 11

• enables developer specific settings
• USB debugging
• memory statistics
• demo mode settings
• requires XCode in iOS and iPadOS
• must use Mac OS
• on Android, enable from settings > about phone
• tap the build number seven times

Question 12

Root Access/Jailbreaking

Answer 12

• provides direct OS access
• requires custom firmware
• replaces the existing OS’s firmware
• uncontrolled access
• renders an MDM relatively useless

Question 13

High Network Traffic (Troubleshooting)

Answer 13

• check built-in data use reports
• or use a third-party reporting application
• run an anti-malware scan