- Type of test: Database Administrators/System Programmers
- Who do you want to test?: Professional Individual Contributor, Mid-Professional
- Purpose: IT
The OS/400 test measures knowledge of working within OS/400, IBM's AS/400 operating system. Designed for experienced AS/400 users, this test covers the following topics: Communications, Data, Devices, IPL/MI, Jobs, Messages, Performance/Maintenance, Printing, and Security.