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Beginner 路 30 lessons 路 4 units

Networking Essentials

How data actually moves: IPs, ports, protocols, Wi-Fi and the tools to see it.

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Unit 1Network foundations

0/5
  1. 1 What a network is quiz
  2. 2 Network devices quiz
  3. 3 The OSI model quiz
  4. 4 The TCP/IP model quiz
  5. 5 MAC addresses quiz

Unit 2IP addressing

0/9
  1. 6 IPv4 addresses quiz
  2. 7 Private and public IPs quiz
  3. 8 NAT quiz
  4. 9 Subnets and CIDR quiz
  5. 10 Subnet masks quiz
  6. 11 Default gateway codequiz
  7. 12 DHCP quiz
  8. 13 IPv6 quiz
  9. 14 Loopback and localhost quiz

Unit 3Ports and protocols

0/8
  1. 15 Ports quiz
  2. 16 Common ports quiz
  3. 17 TCP quiz
  4. 18 UDP quiz
  5. 19 HTTP and HTTPS quiz
  6. 20 DNS in depth codequiz
  7. 21 Email protocols quiz
  8. 22 Other protocols quiz

Unit 4Seeing the network

0/8
  1. 23 ping and traceroute codequiz
  2. 24 Wireshark quiz
  3. 25 Nmap on your own lab codequiz
  4. 26 Wi-Fi security quiz
  5. 27 VPNs quiz
  6. 28 Firewalls quiz
  7. 29 Network troubleshooting codequiz
  8. 30 Cloud networking quiz