IT Essentials Chapter 10 Quiz Answers Online

Locator apps and remote backup are two types of cloud-enabled services for mobile devices. Passcode configuration, screen calibration and screen app locking are performed on the device directly by the user, not as a cloud-enabled service.

Mobile devices are frequently fitted with a GPS radio receiver, enabling them to calculate their position. Some devices do not have a GPS receiver. Instead, they use information from Wi-Fi and cellular networks.

Because mobile device apps do run in a sandbox (an isolated location) it is difficult for malicious programs to infect the device. The passcode and remote lock features secure the device against unauthorized use. The carrier may disable access to some features and programs based on the service contract, but this a commercial, not a security, function.

To avoid the loss of irreplaceable information, it is critical that regular backups be executed and that the hard drives be checked regularly. The signature files are scanned constantly by antimalware software. Updating the OS should happen when necessary but should not occur automatically. Because the factory reset of a device deletes all settings and user data, a factory reset should only be done if a major issue requires it.

The IMAP protocol allows email data to be synchronized between a client and server. Changes made in one location, such as marking an email as read, are automatically applied to the other location. POP3 is also an email protocol. However, the data is not synchronized between the client and the server. SMTP is used for sending email, and is typically used in conjunction with the POP3 protocol. MIME is an email standard that is used to define attachment types, and allows extra content like pictures and documents to be attached to email messages.

As an open source operating system, Android allows anyone to contribute to the development and evolution of compatible software. Android has been implemented on a wide range of devices and platforms including cameras, smart TVs, and e-book readers. Royalties are not payable to Google, and Google has not tested and approved all available Android applications. Android applications are available from a range of sources.

Rooting and jailbreaking are the terms that describe unlocking Android and iOS mobile devices to grant users full access to the file system and full access to kernel modules. Remote wipe, sandboxing, and patching are examples of mobile operating system features and functions that are related to device security.

Most airlines do not permit wireless devices to be used during takeoff and landing in case it interferes with airplane systems. Most mobile devices have a setting called Airplane Mode that turns off the Wi-Fi, cellular, and Bluetooth radios while leaving all other functions enabled. This allows a mobile device to be used on an airplane or anywhere else where data transmissions are not permitted.

The physical Home button on an iOS device can perform many functions depending on how it is used. Pressing the button while the device screen is turned off will wake the device. While an app is in use, pressing the Home button will return the user to the Home screen. Double-pressing the Home button while the screen is locked will show the audio controls, which makes it possible to adjust music volume without entering a passcode to enter the system.

A Quick Response (QR) code is a type of bar code that is designed to be scanned by the camera of a mobile device. The code can contain a variety of information such as links to web sites and links to automatic app downloads.

In the Windows Phone interface, apps are represented by tiles. Tiles are not only short cuts to an app. They can display active content and they can be resized to unclutter and visually organize screens.

Both the OS X and Android operating systems use the Unix operating software as a base.

During the pairing process, a Bluetooth device is set to discoverable mode so as to be detected by another Bluetooth device. Also, a PIN may be requested as part of the pairing process.

If a problem occurs with an Android device that cannot be solved with a normal power off and on, a user can try a reset of the device. Holding the power button and the volume down keys until the device powers off and then powering it on is one of the ways to reset most Android devices.

man – displays the documentation for a specific command
ls – displays the files inside a directory.
cd – changes the current directory
mkdir – creates a directory under the current directory
cp – copies files from source to destination
mv – moves files to a different directory
rm – removes files