Cisco ENCC (300-440) case studies
Cisco ENCC (300-440) · Put your knowledge to work in context.
The Cisco ENCC exam, identified by the code 300-440, sits in Cisco's certification program and is aimed at network, security, and infrastructure engineers who design and operate modern enterprise environments. The published source material groups the relevant technology under four broad headings: AI Infrastructure, Secure Networking, Software Solutions, and Services (CX). The Cisco ENCC (300-440) case studies are 5 cases and about 2,297 words.
1GPU Training Fabric Across Two Halls
A university research group runs a 512-GPU H100 training cluster split between two halls 1.8 km apart. The spine is Cisco Nexus 9364D-GX2A with 400G links; NCCL all-reduce depends on RoCEv2, so the fabric must be lossless.
565 words, about 3 min2Retail DIA and Umbrella SIG Segmentation
A retail chain has 240 stores, each with a Cisco Catalyst 8000V SD-WAN edge, a 200/50 Mbps broadband circuit, and LTE backup. The company is migrating to Cisco Umbrella SIG and has enabled direct internet access for guest Wi-Fi and Microsoft 365.
508 words, about 3 min3Brownfield Automation Pipeline for 1,400 Switches
An enterprise manages 1,400 Catalyst switches across 40 sites with Cisco Catalyst Center 2.3.7, Ansible, and Terraform. A recent Ansible playbook pushed a VLAN change to 300 access switches; 12 failed because their interface templates differed, and a rollback playbook re-applied the previous running configuration, overwriting manual fixes made by the local team.
415 words, about 2 min4CX Engagement After Low Adoption
A customer has deployed 900 Catalyst 9200/9300 switches and Cisco SD-WAN across 60 sites, but adoption of the purchased DNA Essentials, ThousandEyes, and Umbrella licenses is low. In the last 90 days there were 38 P1 TAC cases, mostly spanning-tree loops and PoE budget exhaustion, and the customer blames the product.
385 words, about 2 min5AI Imaging Data Movement and HIPAA Segmentation
A healthcare network is deploying AI diagnostic imaging across three hospitals and a private cloud 40 km away. Each hospital generates 4 TB of imaging data per day, and radiologists expect studies to be available in the private cloud within 15 minutes.
424 words, about 2 min