SSC CHSL 11 Aug 2021 Shift 2 Paper

Among the given options, Android is an open source operating system. It is an open source operating system based on modified version of the Linux Kernel and other open source software. It is designed primarily for touch screen mobile devices such as smartphones and tablets. It was first unveiled in 2007 , with the first commercial Android device, the HTC dream. It is commercially sponsored by Google.