CMT CMT Mobile OS & Application Management 2

Question 1

What is the function of Android Debug Bridge (ADB)?

Accepted Answer

A command-line tool that allows communication between a PC and an Android device for diagnostics and control

Answer

A tool for flashing iOS firmware

Answer

An app store alternative for Android

Answer

A battery calibration utility

Question 2

Which iOS tool is used to restore a device to factory firmware from a computer?

Accepted Answer

iTunes (Windows) or Finder (macOS)

Answer

iCloud only

Answer

ADB

Answer

Samsung Smart Switch

Question 3

A customer's iPhone is stuck in a boot loop. Which recovery mode allows firmware restoration without erasing data if possible?

Accepted Answer

Recovery Mode (DFU mode erases; Recovery Mode attempts to preserve data during a restore)

Answer

DFU Mode preserves data

Answer

Safe Mode restores firmware

Answer

iCloud backup mode

Question 4

What is the significance of a device's build number in Android?

Accepted Answer

It identifies the specific firmware version installed, critical for applying correct updates or patches

Answer

It shows the battery health percentage

Answer

It is the device's unique hardware ID

Answer

It indicates carrier unlock status

Question 5

What does 'cache partition wipe' accomplish on Android?

Accepted Answer

It clears temporary system files that can cause glitches without deleting user data

Answer

It removes all user apps and data

Answer

It resets network settings

Answer

It unlinks the Google account

Question 6

Why should technicians be cautious when disabling system apps on Android?

Accepted Answer

Disabling critical system apps can cause instability, crashes, or loss of essential device functions

Answer

It voids the physical warranty only

Answer

System apps cannot be disabled on any Android device

Answer

It permanently deletes the apps from all devices on the account