IBM Certified OS/2 2.1 Engineer

To become a Certified OS/2 2.1 Engineer (not many of them about), you had to take the following three core exams: and one of the following two elective exams:-
 * Test 010 - Using and Customising OS/2 2.1
 * Test 009 - Installing and Supporting OS/2 2.1
 * Test 012 - OS/2 2.1 Advanced Support
 * Test 013 - OS/2 2.1 Performance and Tuning
 * Test 014 - OS/2 2.1 Problem Determination/Problem Isolation.