Network Fundamentals
Basics of networking, types of networks, devices, and real-world use
OSI Model
Understand how data flows through the 7 OSI layers
Ethernet Fundamentals
Layer 2 communication, MAC addresses, frames, and duplex modes
Switching Basics
How switches learn, flood, and forward frames
VLANs (Virtual LANs)
Network segmentation for performance, security & enterprise design
Subnetting Made Easy
Step-by-step subnetting for exams, interviews & real networks
Routing Basics
How routers move traffic between different networks
OSPF Basics
Enterprise dynamic routing protocol explained simply
DHCP Basics
Automatic IP address assignment using DORA process
DNS (Domain Name System)
How domain names are resolved into IP addresses
DNS (Domain Name System)
How domain names are resolved into IP addresses
ACL (Access Control List)
Standard vs Extended ACL, inbound/outbound, best practices
Firewall Basics
Network security, firewall types, and real-world usage
NAT (Network Address Translation)
How private IP addresses access the Internet
VLANs & Inter-VLAN Routing
Network segmentation & enterprise design concepts