Quiz 2 comes at the end of the third week of class, and covers Chapters 2 and 3 of Friedman & Koffman. Furthermore you should also review the web supplements on Functions with Arguments, and Object Oriented Programming, what you did in Lab3, and the various examples in the week3 directory.
Typically Quiz 2 could include writing out a complete function (usually with arguments), a constructor or method of a class or a main function constructing an object or invoking a function or method.