I had a phone interview with a Software Engineer. After one and a half months, I received an email from HR to schedule an onsite interview. I was really surprised, as I had no hope.

• Round 0: HR asked a few generic questions about my interests and explained the interview process.

• Round 1: Intersection of two sorted arrays.

• Round 2: * Count the number of 1s in an unsigned integer. * In-place matrix transpose.

• Round 3: * How are main() and functions stored in memory? * Identifying successful copying from a source to a target array when the target may have overlapping elements. * What happens when a packet is lost in TCP?

• Round 4: * Diversity techniques: Why are they needed? What happens in multi-path? * Inter-Symbol Interference analysis in the frequency domain. * C Questions: * static int a = 5; * int a = 5; What is the difference between these two? Where are they stored?

• Round 5: * What happens when a low-priority task holding a lock is preempted by a high-priority task? * Some more questions, which I don't remember now!

Some of the questions were unclear, which showed me that they were not at all interested in conducting a proper interview.