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

ADB enables technicians to install apps, pull logs, flash partitions, and issue shell commands from a computer.

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

iTunes on Windows and Finder on macOS are the official tools for restoring iOS devices via USB.

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

Recovery Mode attempts a restore that may preserve user data, while DFU Mode performs a complete firmware flash.

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

The build number pinpoints the exact OS version and patch level, essential for targeted troubleshooting.

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

Wiping the cache partition removes corrupted temp files and often resolves post-update performance issues.

(CMT) Certified Mobile Tech Practice Test