DirectX 11 (or DX11) is a set of drivers distributed by Microsoft that offer improved visual and audio performance. Its main function, and the one for which it is best known, is allow you to run games with excellent state of the art graphics in video games.
A reprimand is a severe, formal or official reproof. Reprimanding takes in different forms in different legal systems. A reprimand may be a formal legal action issued by a government agency or professional governing board (e.g. medical board, bar council). It may also be an administrative warning issued by an employer or school.
1. To feel remorse, contrition, or self-reproach for what one has done or failed to do; be contrite: [He] liked to visit prisoners and admonish them to repent of their ways (Adam Hochschild). 2. To feel such regret for past conduct as to change one's mind regarding it: repented of intemperate behavior.