Let me clear up any misconceptions or bad information that you have.
In order to write the NCLEX exam, you must have a letter called an ATT letter
(Authorization to Test) from the Board of Nursing where you plan on working or get initial licensure. You cannot just walk into a test center and take the exam. Miinimum time for getting this ATT letter is over three months on average for a foreign nurse, and over six months from California.
Interim permits in California are only given out once you have been given an ATT letter, not while they are checking your papers. The interim permit means that everything has been approved, and all that is needed is for you to sit for the actual exam.
It is also quite difficult to get a position offered on an interim permit as a foreign nurse. Every hospital wants to know that you have passed NCLEX before they are going to go to the expense of your petition. And what your speaking skills are like, don't forget the English exams...........