In a windows Universal app, how to get Device RAM\CPU, Network speed\Type, Disk space being used by app. RAM\CPU usage by the app.

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Javascript

WinJS

I'm working on a Windows Universal Javascript App.
Using WinJs, i need to get the below device configurations :

1.       Device RAM\CPU
2.       Network speed\Type
3.       Disk space being used by app
4.       RAM\CPU usage

i've already implemented for device ModelName and Manufacturer by using 'System.Devices.ModelName' , 'System.Devices.Manufacturer' properties with the method 'Pnp.PnpObject.findAllAsync()'. But, i'm not able to get the properties for the above mentioned areas.

Actually, i'm looking for the properties for the above four.
Thanks in advance.