IBM Software Developer interview questions

Brief intro of myself I was asked about linux commands: How to find a directory? How to display all the directories? How to find the administrator of the pc? Then She started asking me asking indepth and I told her to switch to other skill in my resume. She switched to OS: Process vs thread what is context switch? what is segmentation? what is swapping? primary memory vs secondary memory? Then, She asked me to open notepad and asked programming questions: 1. Valid paranthesis check 2. Sort numbers using any sorting algorthm Behind the scenes of compilation of C what is strcpy(),strcat()? what is malloc and calloc? then she asked me to open the compiler and asked: swap two numbers without third variable reverse words in sentence I have mentioned python in my resume: __init__ and __del__? lambda function global vs static? why do you use python?

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