Focus: IP Addressing & Subnetting Basics

Learning Intention

We are learning how IP addresses are structured and how subnets divide networks into logical groups.

Success Criteria

• I can identify the network portion and host portion of an IPv4 address.
• I can explain the difference between static and dynamic (DHCP) addresses.

📝 Seminar Study Notes – “Inside an IP Address”

• IPv4: 32 bits, 4 octets (e.g., 192.168.1.10).
• Subnet Mask: Defines network vs host (255.255.255.0 = /24).
• Private Ranges:
  • 10.0.0.0 – 10.255.255.255
  • 172.16.0.0 – 172.31.255.255
  • 192.168.0.0 – 192.168.255.255
• DHCP: Assigns IPs automatically.
• Static: Manually assigned (servers, printers, routers).

Warm-Up Practice Question

• Which of these is a private IP address?
  • a) 8.8.8.8
  • b) 172.20.10.5
  • c) 200.1.1.1
  • d) 150.10.5.5
• Answer: b) 172.20.10.5

Seminar Activity