ASPA offers an entire series of exams for pension designations.
PA1-3 cover the basics and daily administration. These three are take home exams.
DC 1-2 cover more basics and 401(k) plans. They are multiple choice exams you take at a Prometric Testing site.
Upon successful completion of these 5 exams you qualify for the Qualified 401(k) Administrator (QKA) designation.
DC-3 Advanced plan issues and C2-DB Defined benefit plans exams are also multiple choice exams.
Successful completion of these exams along with the previous 5 exams qualifies you for the Qualified Plan Administrator (QPA) designation.
C-3 short answer and essay exam on Fiduciary Issues and Distributions and C-4 essay exam on Consulting along with the previous exams qualifies you for the Certified Pension Consultant (CPC) designation.
For more informaiton see:
ASPA.org
ASPA