ByteDance Backend Software Developer I interview questions

Initial conversation started on LinkedIn, after showing interest, I was scheduled for a technical interview with someone from the department of the role. Second round was also a technical interview with someone from the location of the role but in a different department. First interview was great, very great interaction with the interviewer, second round, the interviewer seemed distracted and overall stern and straightforward, not very engaging. Both technical interviews covered topics around web technologies, database indexing, HTTP, TCP/IP, performance optimization etc.