From here you can purchase an official Linux exam in its different variants:
Essentials
Linux Professional
- LPIC-1: 101
- LPIC-1: 102
- LPIC-2: 201
- LPIC-2: 202
- LPIC-3 Mixed Environment: 300
- LPIC-3 Security: 303
- LPIC-3 Virtualization and Containerization: 305
- LPIC-3 High Availability and Storage Clusters: 306
Open Technology
- DevOps Tools Engineer: 701
- BSD Specialist: 702
* The value mentioned does not include VAT
