CloudNetX case studies
CloudNetX · Put your knowledge to work in context.
CloudNetX is a CompTIA certification, exam series code CNX-001, version V1, launched February 18, 2025. It validates the ability to design and implement secure, scalable networking solutions in hybrid environments, with emphasis on security design, network monitoring, performance optimization, and advanced troubleshooting, including hands-on skills such as Zero Trust implementation. The CloudNetX case studies are 5 cases and about 3,141 words.
1Active-Active Multi-Region VPC Topology for a Payments Platform
A payments platform is moving from two on-premises data centers to active-active deployments in AWS us-east-1 and eu-west-1, plus Azure West Europe for analytics. The platform has 42 VPCs across the three clouds, peaks at 14 Gbps inter-region, and must keep checkout p99 latency under 90 ms.
658 words, about 3 min2Hybrid SD-WAN Internet Breakout for Global SaaS
A manufacturer operates 60 branch sites across North America, Europe, and Asia. Each branch has a 200 Mbps MPLS circuit and a 1 Gbps broadband circuit.
627 words, about 3 min3Microsegmentation After Lateral Movement in a PCI VPC
During an incident review, a compromised internet-facing EC2 instance in a PCI-scoped VPC used an overly permissive security group rule (0.0.0.0/0 on port 3306) to reach an RDS MySQL database in another subnet. The attacker then queried a shared IAM role attached to the instance and enumerated S3 buckets.
651 words, about 3 min4Observability Gap in Multi-Cloud Kubernetes
A retail company runs 2,000 pods across EKS in us-west-2 and AKS in West Europe. The SLO for checkout is p99 under 300 ms, but dashboards show 15% TCP retransmits on node-to-node traffic and intermittent 2-second tail spikes every 10 minutes.
590 words, about 3 min5Intermittent Outages After Adding a Second Hybrid Circuit
After adding a second 10 Gbps Direct Connect circuit between an on-premises data center and AWS, users report 3-5 second outages every 20-30 minutes. The on-premises network has two routers running eBGP with AWS virtual private gateways over the two circuits.
615 words, about 3 min