That is a terribly worded question. Did you have to pay to access those questions?
The program will not create any OUTPUT files.
The LIBNAME statement sets up the libref MYLIB pointing to the specified file, but nothing it written until you use it.
The data step will create a SAS dataset in the WORK library (unless you have defined the USER libref and/or used the USER option). I would not call that an OUTPUT file.