Use APKPure App
Get Data Communication ( DCCN ) old version APK for Android
Install and learn basics of Computer Network including 7 Layers.
This Application helps you understand the fundamentals of computer networking
like OSI model, IP addressing, Networks Protocols and many more.
This app teaches you the basics as well as the advance concepts. So, anyone who is interested in learning or exploring the field of Computer Networking can download it. And the best part is that this app doesn't require any internet connection so feel free to learn from this app.
Please Try it.