TechPC Mug • Networking Fundamentals

QoS Models Explained: Best-Effort vs IntServ vs DiffServ (Complete Guide)

Learn how Quality of Service (QoS) works, why congestion happens, and how Best-Effort, Integrated Services (IntServ), and Differentiated Services (DiffServ) compare in real networks.

Best-Effort vs IntServ vs DiffServ explained visually — understand QoS models, traffic prioritization, and service guarantees in modern networks.

TechPC Mug • Data Center Networking

Cisco ACI Explained: Spine-Leaf Topology, APIC Controller, and Application Network Profiles

Understand Cisco Application Centric Infrastructure (ACI) from the ground up—how it works, why it exists, and what to remember for exams.

Cisco ACI uses policy-based control and a spine-leaf fabric design for scalable, automated data center networking.