Tencent

Difficult, they really understand the detail of the tech stack about computer networks. They also asked many things like how do you set up the network configuration for TCP, three-way handshake to deep.

First self introduction, then ask some questions about my projects on resume. Besides ask some questions concerning Java and computer science basis, Then give me opportunity to ask them some questions.

The first person is actually going to be your mentor. Generally a very good experience. Be sure you have done enough LeetCode questions. They also ask you a lot of Java questions. But it is very dependent on the interviewer。