Wipro Network Engineer interview questions

Hello Everyone, 3days back i attend interview actually I’m a C & Data Structures, Linux and Networking. i have 3.5 years experience. L2 & L3 Functionality. The wipro position is “DEVICE DRIVER” in this domain I don’t have knowledge before interview I notice that, but they took interview he said no problem if you have knowledge also we will trained you 3 to 4 months and he selected 1st round of interview after they took The second Level interview initially informed.I don't have experience in Device Driver Developer. Manish Assudani took the interview coding part, answered all the questions and he was satisfied too early to join. After that i got call from “HR” team feedback is negative. I don’t know what happened in this, why they doing such kind of things 🤯