Networking Basics Certification

How a request actually reaches a server, and how to tell where it broke.

  • 10 topic quizzes, 10 questions each
  • Any 2 free, then 10 credits
  • Earn a certificate as you clear topics

Topics

Start with whichever topic you need — there is no fixed order. Any 2 quizzes in this track are free; after that each is 10 credits and stays yours to re-attempt as often as you like.

Quizzes for this track are being written now. The topics below are what it will cover.

  1. 01The OSI and TCP/IP models
  2. 02IP addressing and subnetting
  3. 03TCP vs UDP, ports and sockets
  4. 04DNS — resolution end to end
  5. 05HTTP and HTTPS fundamentals
  6. 06TLS, certificates and handshakes
  7. 07Routing, NAT and gateways
  8. 08Firewalls and access rules
  9. 09Troubleshooting: ping, traceroute, dig, curl
  10. 10Packet inspection basics
Who it's forAnyone who has debugged "the site is down" by refreshing and hoping.
What you need firstNothing. Each quiz stands on its own, so pick any topic and start there.

How the certificate works

Score well on a quiz and you earn a shareable certificate for it, with your score and rank. Clear topics in any order and collect them — every one is a link you can put in front of someone.

Every question is dual-AI verified, and any 2 quizzes in this track cost nothing.