Nokia Senior Software Engineer interview questions

Interviewing process is long drawn, Nokia HR going for an hibernation during the period between interviews before communicating the outcome (take an average 10+ days). Underwent 2 telephonic tech interviews, then 2 panel interviews (each having a gap of atleast 10-15 days). Very unprofessional HR managers lacking basic etiquette of calling the candidates promptly or planning multiple interviews together. You can make out unrest in the company. Totally not recommended if you have a stable career already.