Analog Devices Software Engineer interview questions

Signals and Systems basics and DSP:given a system function and asked for its stability, fourier transform of a signal(given the transform and asked to find transform based on properties),asked response of a system given the input and impulse response using DFT and IDFT, a question on whether the given signal is wide sense stationary, multirate signal processing , to find the correct magnitude response of given pole zero plot -to choose among four options. C:output of given program on pointers, linked list, function to find output of N tap FIR filter, program to reverse a string without using any temporary variable