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What command is used to open a text editor in a Linux system? grep ifconfig ls vim Explanation: The vim command is used to open a text editor; ls displays…

A Linux PC user notices that the PC freezes on startup and exhibits kernel panic where there is a stop screen. What is a possible cause for the issue? LILO…

A mobile device user notices that the system update includes an update of the Primary Rate ISDN (PRI). What is the function of the PRI? It is the configuration of…

Which cloud-based storage service does Microsoft provide for backups? iCloud Dropbox OneDrive Google Sync Explanation: Data on mobile devices must be backed up periodically to ensure that it can be…

Which statement describes the Touch ID in iOS devices? It is used as the passcode. It is the encryption key set by the user. It is the hash value of…

What is the purpose of using the auto-brightness feature on a mobile device with an LCD screen? to conserve battery power to reduce the interference from sunlight to prevent the…

Which statement describes the iOS app icons on a mobile device screen? Each icon is a shortcut of the app. Each icon represents the actual app. Each icon represents an…

Which navigation icon on the system bar of an Android device is used to return to the previous screen? Back Home Menu Recent Apps Explanation: The Back icon, if pressed,…

Android apps run primarily based on privileges enabled by the user. Sometimes an Android app requires extra privileges to access system components. How do Android apps run to accomplish both…

Which model does Apple use to provide iOS apps to customers? iCloud Xcode sandbox walled garden Explanation: Apple uses a walled garden model for the iOS apps. The apps must…

What tool or command is used in the Mac OS X to navigate the file system? File Explorer Task Manager Finder mstsc Explanation: Finder is similar to the Windows File…

An administrator is re-imaging a large number of Mac OS X machines. What built-in tool or command can be used to remotely boot the computers? mstsc Netboot Time Machine Finder…

What is a purpose of the boot manager program? It manages antivirus signature files, encryption keys, and certificates when a device boots. It automates the POST and checks the disk…

What is the purpose of signature files used to secure mobile devices and operating systems? They contain a record of historical and pending firmware and software updates. They contain a…

What is Wi-Fi calling? a method used to push apps to smartphones a convenient way to securely and digitally make payments with mobile devices a government emergency alert service for…

What is the name of the Windows Phone 8.1 digital, or virtual, assistant? Bing Cortana Nova Launcher Spotlight Explanation: Siri is the well-known digital, or virtual, assistant that is available…

What is the result of doing a factory reset on a mobile device? The operating system will be updated with the most recent updates and patches. All user data and…

What represents apps in the Windows Phone interface? buttons icons tiles widgets Explanation: The Windows Phone OS uses tiles to represent apps. Tiles are rectangles that can display active content.…

What is a good source for safely downloading Android apps? iTunes Google Play freeware sites the Apple App Store Explanation: Google Play ensures that the app is compatible with the…

A file called new_resume has the following file permissions: rw-r-x--x. What two facts can be determined from these permissions? (Choose two.) The user has full access to the file. Members…