JNCIA-Cloud case studies
JNCIA-Cloud · Put your knowledge to work in context.
The Juniper Networks Certified Associate, Cloud (JNCIA-Cloud) is an associate-level certification aimed at network and cloud engineers who design, deploy, and operate Juniper-based cloud and data-center environments. Candidates typically already hold foundational networking knowledge and want to demonstrate cloud-specific competence before moving to professional-level tracks. The exam is expected to cover four areas: cloud fundamentals (service and deployment models, virtualization, and the shared-responsibility split between provider and customer), cloud networking (overlay and underlay design, EVPN-VXLAN concepts, routing, and connectivity to public clouds), cloud security (segmentation, policy enforcement, firewalling with SRX Series platforms, and secure access), and cloud automation and orchestration (APIs, templating, and controller-driven provisioning). Preparation should combine hands-on lab time on Juniper virtual platforms with study of official documentation, then timed practice questions that force you to justify each answer rather than recognize it. The JNCIA-Cloud case studies are 5 cases and about 2,759 words.
1Choosing a Migration Path Under a Hard Colo Exit
Northwind Freight runs a nine-year-old Java order system on 38 VMware VMs in a colo whose lease expires in seven months. The Oracle database is 8 TB and grows 2.5 TB per month; a licensing audit is due in 10 months.
562 words, about 3 min2IPsec Tunnel Is Up but the Oracle Handshake Fails
An online retailer connects its on-premises Juniper SRX345 to an AWS VPC with a route-based IPsec VPN using two tunnels and eBGP. On-premises uses 10.50.0.0/16; the VPC uses 10.60.0.0/16.
604 words, about 3 min3Containing a Leaked CI/CD Key in a Multi-Account Landing Zone
Helios Pay runs a 14-account AWS landing zone under AWS Organizations. A GitHub Actions workflow deploys to a sandbox account using an IAM user access key stored as a repository secret.
527 words, about 3 min4Terraform Drift and a Laptop-Held Production State
Orbit CRM runs three Terraform environments. Dev and staging use an S3 remote backend with DynamoDB locking; production state is stored only on one engineer's laptop because the team was afraid of a bad migration.
529 words, about 3 min5Autoscaling Loop Behind an ALB During a Flash Sale
An e-commerce site runs an Auto Scaling group behind an Application Load Balancer in two availability zones. During a flash sale, the group scales from 8 to 40 instances in 10 minutes.
537 words, about 3 min