Raj:
Cleared CKAD exam in first attempt. Thanks, @Mumshad Mannambeth, @Mohamed Ayman @Tej_Singh_Rana and everyone else here.
Perhaps spent a lot of time worrying on aliases , vimrc and all those different environments, due to which I lost time and was unable to complete it fully.
Mumshad, What a wonderful course you have made !! Lighting Labs, mock tests helped a lot to achieve in a months time.
Some additional resources for practice
https://github.com/dgkanatsios/CKAD-exercises
https://www.katacoda.com/liptanbiswas/courses/ckad-practice-challenges
https://medium.com/bb-tutorials-and-thoughts/practice-enough-with-these-questions-for-the-ckad-exam-2f42d1228552