Apple Updated Apple-Device-Support Exam Questions and Answers by natan

App preference files are files that store the rules or parameters that tell your apps how they should work. They usually have the .plist extension and are associated with a specific app’s bundle identifier. App preference files are typically stored in two locations on a Mac: the user library and the system library. The user library is located at -/Library/Preferences and contains the preference files for the current user. The system library is located at /Library/Preferences and contains the preference files for all users. These locations are different from the root library, which is located at /System/Library/Preferences and contains the preference files for the operating system and its components. You can access these locations by using the Finder, the Terminal, or the defaults command line utility. You can also edit, delete, or reset the preference files using various methods, but you should be careful not to damage or corrupt them, as they may affect the functionality of your apps.  References :

Where are the application preference files location on Mac

What are Mac system preferences files, and how do I fix them?

How to change the default apps used to open files in macOS

This is the correct answer because Activity Monitor is a built-in macOS utility that allows you to see how much CPU, memory, disk, and network resources are being used by each app and process on your Mac. You can use Activity Monitor to identify and quit apps that are consuming a large percentage of your CPU or memory, or that are not responding. This can help you improve the performance and responsiveness of your Mac. To launch Activity Monitor, you can use Spotlight (Command+Spacebar) and search for it, or find it under Applications > Utilities. You can sort the apps and processes by clicking on the column headers, such as “% CPU” or “Memory”. You can also use the search field to filter the list by name. To quit an app or process, select it and click on the “X” button at the top of the window. You can also use the View menu to see more information about the app or process, such as its open files and ports, its memory usage, or its energy impact.  References :  How to See Which Program Is Using All Your CPU on Mac ,  If your Mac runs slowly - Apple Support ,  How to Fix Crashing Apps on a Mac - How-To Geek

You can enroll up to five fingerprints on iPad Air (4th generation) using Touch ID. Touch ID is a feature that allows you to securely and conveniently unlock your iPad, authorize purchases and payments, and sign in to many third-party apps. You can add multiple fingerprints (both of your thumbs and forefingers, for example) or register multiple reads of the same finger to provide even more data from a variety of angles.  References : =  Apple - Support - Manuals , Set up Touch ID on iPad;  iPad Air: How to set up and use Apple’s new Touch ID fingerprint sensor .

 Before you can access the macOS Recovery options on a Mac with Apple silicon that has FileVault or Activation Lock turned on, you must first authenticate as an administrator. This is because FileVault and Activation Lock are security features that encrypt your data and prevent unauthorized access to your Mac. To authenticate as an administrator, you need to select one of the displayed administrator accounts on the startup options screen, then enter the account’s password. This will unlock the system and allow you to use the macOS Recovery apps and utilities. The other options are not correct. You do not need to access the Startup Security Utility or enter the FileVault recovery key or the Apple ID and two-factor authentication to reach the macOS Recovery options.  References :  Use macOS Recovery on a Mac with Apple silicon - Apple Support ,  How to Enter macOS Recovery on an Apple Silicon Mac - MUO