220-1102 Question 608
Single answerDeveloper modeA developer uses a company-issued Windows 11 laptop to test an in-house app package that is not published in the Microsoft Store. When the developer tries to install the app, Windows blocks the installation because it is not from the Store. The laptop is managed locally, and you want to allow this testing with the least unnecessary exposure to additional developer tools. Which action should you take?
- A
Turn on Developer Mode in Settings so Windows allows sideloading of trusted app packages
- B
Disable User Account Control so unsigned applications can run without prompts
- C
Join the device to an Active Directory domain so Store restrictions are removed
- D
Boot into Safe Mode and install the app there to bypass Store-only restrictions
Show answer and explanation
Correct answer: A
Explanation
The best answer is to enable Developer Mode because the scenario specifically involves testing an in-house app package outside the Microsoft Store on Windows. In Windows 10 and Windows 11, Developer Mode is intended for development and testing workflows, including sideloading apps for testing. From an A+ Core 2 perspective, the key is choosing the supported Windows feature that solves the problem without making unrelated security changes. Disabling UAC is a common misconception because technicians may associate prompts or blocks with administrative controls, but UAC does not govern Store-only app sourcing. Likewise, domain joining and Safe Mode do not address this requirement. Microsoft documents Developer Mode as the setting used to develop, test, and install apps outside the Microsoft Store environment, making it the most appropriate and least disruptive choice in this case.
- A. Correct.
Correct. In Windows 10/11, Developer Mode is the appropriate setting for development and testing scenarios involving apps that are not installed from the Microsoft Store. Enabling it allows installation and testing of app packages outside the Store and is the direct solution to this scenario. It is more appropriate than broadly weakening security controls unrelated to app deployment.
- B. Incorrect.
Incorrect. User Account Control manages elevation prompts and privilege consent, not Store-origin restrictions for app installation. Disabling UAC would reduce system security and still does not properly address the need to test an app package in a supported way.
- C. Incorrect.
Incorrect. Joining a device to Active Directory does not itself remove Microsoft Store app source restrictions. Domain membership can enable centralized management through Group Policy, but it is not the direct fix for allowing a developer to install an in-house test app.
- D. Incorrect.
Incorrect. Safe Mode is used for troubleshooting and loading a minimal driver and service set. It is not a supported method for bypassing app installation source restrictions, and many app installation workflows will not function normally in Safe Mode.