The link for the slides for OS 5th Unit is given below.
https://drive.google.com/file/d/1DNmdCj8Ul0VWV61e3emwb-SaNOpWVrKp/view?usp=sharing
You can also get exam oriented materials for mobile OS from the following link
http://drranurekha.com/mobile-os/
Concentrate either linux or mobile OS. In either or choice either you will get the question from linux or Android / iOS
