Chapter 12: Mobile, Linux, and macOS Operating Systems

What are two types of cloud-enabled services for mobile devices? (Choose two.)

• locator apps

• remote backup

• passcode configuration

• screen calibration

• screen app locking

Which three methods can be used to unlock a smartphone? (Choose three.)

• NFC

• passcode

• encryption

• swipe pattern

• biometric information

What are two features of the Android operating system? (Choose two.)

• Android is open source and allows anyone to contribute to its development and evolution.

• Android has been implemented on devices such as cameras, smart TVs, and e-book readers

• All available Android applications have been tested and approved by Google to run on the open source operating system.

• Each implementation of Android requires a royalty to be paid to Google.

• Android applications can only be downloaded from Google Play.

user has an iOS device. What will happen if the user forgets the passcode to unlock the device?

• The user must call Apple to reset the passcode.

• The user can visit the Apple website to initiate a passcode reset request.

• The user must perform a full restore from a backup saved in iTunes or iCloud.

• The user can use the Find My iPhone service on the website www.icloud.com to reset the passcode.

A company is creating a new website to be hosted on a Linux server. The system administrator creates the group "webteam" and assigns team members to it. The administrator then creates the directory "webpages" for storing files. Later that day, one of the team members reports of being unable to create files in the "webpages" directory or subdirectories. The administrator uses the ls -l command to view the file permissions. The result displayed is drwxr-xr--. What should the administrator do to allow team members to add and edit files?

• Add the user to the webteam group.

• Issue the command chmod 775 –R webteam.

• Issue the command chmod 775 –R webpages.

• Make the user the owner of the directory and subdirectories.

What three tasks can be done with the iOS device Home button? (Choose three.)

• wake the device

• respond to an alert

• return to the home screen

• open audio controls

• place apps into folders

What two preventive maintenance tasks should be scheduled to occur automatically? (Choose two.)

• executing a backup

• scanning the signature files

• updating the operating system software

• resetting devices by applying the factory reset feature

• checking the disks for bad sectors

Android and OS X are based on the Unix operating system.

• True

• False

A user presses the Recent Apps icon on an Android-based smartphone to see a list of recently used apps. What should the user do to remove an app from the list?

• Swipe the app up.

• Double tap on the app.

• Swipe the app down.

• Swipe the app to either side.

Which feature of an Android or iOS mobile device helps prevent malicious programs from infecting the device?​

• The phone carrier prevents the mobile device app from accessing some smartphone features and programs.

• The passcode restricts the mobile device app from access to other programs.

• Mobile device apps are run in a sandbox that isolates them from other resources.

• The remote lock feature prevents malicious programs from infecting the device.