The plural form of el examen is <span>los exámenes. Tengo los </span>exámenes. = I have the exams. (The moderators keep deleting my correct answers for odd reasons, yet they allow bad answers to stay and get awards.)
<em>Saber</em> is to know a fact and <em>conocer </em>means to be familiar with something/someone. In this case, <em>conocer</em> is used to say if you know someone.