Phase 3: Networking Essentials

Master OSI models, IP subnetting, core network protocols, and professional troubleshooting techniques.

OSI & TCP/IP Models

Understand the 7 layers of the OSI model, TCP/IP architecture, encapsulation, and how data moves across networks.

Module 1 · ~20 hrs

IP Addressing & Subnetting

Master IPv4/IPv6 addressing, CIDR notation, subnet calculation, private vs public IPs, and NAT.

Module 2 · ~25 hrs

Essential Network Protocols

Explore DHCP, DNS, HTTP/S, SSH, RDP, FTP, SNMP, and ARP with port numbers and security considerations.

Module 3 · ~20 hrs

Network Troubleshooting & Diagnostics

Learn systematic troubleshooting methodology, ping, traceroute, Wireshark, cable testing, and real-world case studies.

Module 4 · ~15 hrs