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course 11 · 4 racks · 19 modules · 4 lessons

Computer Networks

Everything about networks: from cables and IP to OSPF, BGP, VPN and design.

Certificates
CompTIA Network+, CCNA foundations
Outcome
Network engineer
Practice
Network simulator

Every lesson here is a ticket. Close tickets, the units in the rack light up, and new equipment appears in your company.

▶ First taskI already work in IT: placement test

Already work with this? Take the placement test across all 4 racks, 1.5 minutes per question, and I'll credit the racks you know.

Placement test
rack 1Beginner0/4
  1. #1What a computer network is and why we need it10 min
  2. #2Network devices and topologies12 min
  3. #3The OSI model: seven layers12 min
  4. #4The TCP/IP stack and a packet's trip from browser to server14 min
rack 2Specialist0/—
rack 3Professional0/—
rack 4Expert0/—