Computer Networks
TCP / UDP · HTTP · DNS · TLS
What this skill is about
TCP / UDP · HTTP · DNS · TLS
Topics we drill
- OSI vs TCP/IP layers
- TCP handshake + congestion control
- HTTP/1, HTTP/2, HTTP/3
- DNS resolution
- TLS handshake
Why this matters at interviews
Real interviewers don’t just check if you know the syntax — they probe whether you’ve used the concept under production pressure. Our drills mirror that. Adaptive difficulty, named anti-patterns called out as you go, and a senior-staff voice that teaches the production vocabulary rather than dumbing it down.