On-prem and Cloud
Learn the difference between on-prem and cloud, bare metal, virtualization, and IaaS vs PaaS vs SaaS, and how apps fit in modern IT.
Leaf-Spine Architecture
Learn why Leaf-Spine architecture replaced three-tier networks, enabling horizontal scaling, efficient east–west traffic, and modern data center growth.
Three-Tier Architecture
Learn why hierarchical network design is needed, how it solves full mesh problems, and how two-tier and three-tier architectures improve scalability.
Small Office Home Office (SOHO)
In this lesson, we will explore the various technologies and devices utilized by Small Office Home Office (SOHO) networks. We focus on the big picture without getting into great detail. The focus of the lesson is to give you an introduction to the different types of networks.
Lab#1.2 - Exploring Data Encapsulation in Cisco CML
Set up a simple Cisco CML lab to explore data encapsulation. Build, configure, and capture traffic to see TCP/IP headers and the 3-way handshake in action.
Lab#1.1 - OSI model in practice
Explore the OSI model in action with Wireshark. Learn how data moves through layers, from MAC and IP to TCP handshakes and HTTP requests.
Load Balancers
Learn what a load balancer is, how it works, and why it improves app availability, performance, and scalability in modern network infrastructures.
Firewalls
Learn how firewalls protect networks using zones, security levels, and stateful inspection to block threats and control trusted traffic flow.
Routers and L3 Switches
Learn how routers and Layer 3 switches connect networks, route IP packets, and enable fast inter-VLAN communication in modern network designs.
Hubs, Bridges and Switches
Learn how Layer 2 network devices evolved from hubs to modern switches, and how they manage traffic, reduce collisions, and scale in enterprise networks.