Course details
Network Engineer
Learn how data actually crosses a network: the devices that move it, the protocols that shape it, the layer models that organise it and the addresses that steer it. Every lesson works on the same small office network, so each idea lands on something concrete.
Course curriculum
How Networks Carry Data4 lessons
Start with the big picture: how the internet is built, who asks and who answers, how data is chopped into packets and frames, and how to talk about speed without mixing up bandwidth, latency and throughput.
What Are Networks?5 lessons
Name networks by their reach, pick the right cable or radio, give devices their IP and MAC addresses, and learn how protocols, ports and sockets let TCP, UDP and ICMP do their different jobs.
Network Devices and Services5 lessons
Meet hubs, switches, access points, routers and modems by what each one reads and forwards, then the services every office leans on: DNS, DHCP and the everyday protocols for web, remote access, files, mail and time.
The OSI and TCP/IP Models3 lessons
Walk the seven OSI layers from the cable up to the application, then fold them into the four-layer TCP/IP model the internet actually runs on, and watch a message get wrapped and unwrapped on its way.
IP Addressing3 lessons
Compare IPv4 with IPv6, tell private addresses from public ones, and see how NAT and PAT let a whole office share a single public address.
Subnetting4 lessons
Read subnet masks and CIDR prefixes at a glance, split a block into unequal subnets with VLSM, and combine neighbouring blocks back together with supernetting.