At first I was invited to take a 4 hour test with another few candidates. The test was about binary numbers and some logical operation.

The other part of the test includes some unseen protocols and some questions about them while using "Wireshark" app. For example - what is the length of the message in the packet - or what is the offset of the message. Some of the questions include 'C' code and some questions about the algorithm - still all based on the unseen protocol.

Another part of the test was to write a response to a customer about some virus - in English.

There was some general question like "what is SMTP protocol"

After this day - if you passed the test you are invited to an interview with a team leader

Most of the interview was about my CV - only two small questions.

Fitst one was "how to sort an array with the best time complexity - one example was enough. Second one was about ASCII code and strings - with no really an algorithm.