ACSA (fewer than 24 ACN ACSA's in the world!)
Apple Certified System Administrator (ACSA
This certification verifies an in-depth knowledge of Apple technical architecture and an ability to install and configure machines; architect and maintain networks; enable, customize, tune, and troubleshoot a wide range of services; and integrate Mac OS X, Mac OS X Server, and other Apple technologies within a multi-platform networked environment. The ACSA certification is intended for full-time professional system administrators and engineers who manage medium-to-large networks of systems in complex multiplatform deployments.