5 U.S. Code § 3361
5 U.S. Code § 3361 is about Promotion; competitive service; examination. It is under Part 3 (Employees) Subpart B (Employment and Retention) Subchapter 5 (Promotion) Chapter 33 (Examination, Selection, And Placement) of Title 5 (Government Organizations and Employees) of the Code.
An individual may be promoted in the competitive service only if he has passed an examination or is specifically excepted from examination under section 3302 of this title. This section does not take from the President any authority conferred by section 3301 of this title that is consistent with the provisions of this title governing the competitive service.