What can be with Windows Phone?

Hi,

Please resolve my basic queries in regards of Windows Phone:

• Like Rooting in android and Jailbreak in iOS, is there anything in Windows Phone as well?
• Android apps are .apk. Like this, what about Windows phone apps?
• In case of android, some of users install apk from different sources (apart from Play Store). Can it be done in Windows phone as well?
• In comparison to android phone, how Windows phones are secure?
• Can we install .exe file in Windows Phone? and
• In comparison of Android, why should we consider windows phone?

Regards
GNS

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