CNEpv case studies
CNEpv · Put your knowledge to work in context.
The Certified NetExpert Professional (CNE) is an independent, vendor-neutral credential for network engineers who design, operate, secure, and automate modern enterprise and cloud-connected networks. It suits professionals with hands-on experience in routing, switching, security, and monitoring who want to validate a broad, practical skill set rather than a single vendor platform. The exam spans six domains: network fundamentals and topologies (15%), routing and switching (20%), security and threat mitigation (18%), operations and troubleshooting (17%), automation and programmability (15%), and cloud, virtualization, and emerging technologies (15%). Items include multiple choice, multiple response, and scenario-based questions that test judgment, not just recall. The CNEpv case studies are 5 cases and about 4,170 words.
1Overlapping Address Space After a Merger
Two regional distributors merged last quarter. Company A uses 10.10.0.0/16 across three buildings and a small data center; Company B uses 10.10.8.0/16 at its warehouse campus and 10.10.0.0/24 for a legacy ERP cluster.
856 words, about 4 min2Mutual Redistribution and a Route Feedback Loop
A manufacturer runs OSPF area 0 in its data center and EIGRP 100 across 14 plants. Two routers, R1 and R2, mutually redistribute between the protocols.
843 words, about 4 min3Segmenting a Flat Cardholder Data Environment
A payment processor has 450 employees on a flat 10.0.0.0/16 campus network. Its cardholder data environment consists of 12 Windows servers, 3 Oracle databases, and 40 administrative workstations, all in the same VLAN as 300 user devices and 25 printers.
853 words, about 4 min4POS Timeouts Behind a Healthy SD-WAN Dashboard
A 220-store retail chain migrated to an SD-WAN overlay six months ago. Each store has a 300 Mbps fiber primary, a 100 Mbps LTE backup, and a 1 Gbps handoff to the provider.
809 words, about 4 min5Configuration Drift Across 180 Branch Routers
A school district operates 180 branch routers managed by three engineers. Configurations are edited manually over SSH, and the only backup is a weekly TFTP copy to a NAS.
809 words, about 4 min