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Which of the following allowed Joe to install the appli…

Joe, an employee, wants to show his colleagues how much he knows about smartphones. Joe demonstrates a free movie application that he installed from a third party on his corporate smartphone. Joe’s colleagues were unable to find the application in the app stores.
Which of the following allowed Joe to install the application? (Select two.)

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Near-field communication.


Ad-hoc connections



6 Comments on “Which of the following allowed Joe to install the appli…

  1. The correct answers are B and E:

    Rooting/Jailbreaking Every mobile device comes from the factory with root access
    protected from the user. This is an important aspect of all mobile operating systems,
    as reserving root access enables the creator of the OS to update software, provide
    containerization, and impede a number of security vulnerabilities that giving root access
    would allow. When a user roots an Android system or jailbreaks an iOS system, they
    are taking root access. Any good MDM software can detect this during onboarding or
    during ongoing monitoring to let the organization know if this takes place.
    One of the main reasons people root/jailbreak their mobile device is to grab applications
    from third-party app stores that will not work as desired without root access (plenty of
    third-party apps run on non-rooted or non-jailbroken phones as well). Whether you
    root/jailbreak or not, third-party app stores are outside the control of Apple and Google
    and do not provide any security. Figure 7-42 shows one third-party store for Android
    apps, F-Droid.
    Sideloading The standard Android installation file type is the APK file. Normally,
    APK files are downloaded automatically from Web stores and installed. However, it is
    possible to copy an APK file from a thumb drive, an SSD drive, or even across the
    network or Bluetooth and install the APK file without any interference from a Web store.
    This is called sideloading (Figure 7-43). Sideloading is risky because there are no safeties
    on the installation media. Aside from agreements with employees not to sideload, there’s
    no foolproof current mechanism to enforce or monitor a prohibition.



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