Operating Systems第 17 / 100 题
Which mobile operating system is open source, developed primarily by Google, and allows apps to be installed from multiple stores and sideloaded APK files?
a.Android
b.iOS
c.iPadOS
d.watchOS
解析
Android is open source and supports installation from Google Play, third-party stores, and sideloaded APK files. iOS and iPadOS are closed platforms that normally restrict installs to the App Store.
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