This workbook is primarily aimed at CCIE Routing and Switching candidates, whether you have already passed your certification and want to brush up on your skills, or for those candidates who are in their preparations to take the lab exam currently. It is assumed that anyone using this workbook has a comprehensive understanding of all technologies from the CCIEv4 and v5 R&S blueprints. There are two main purposes of this workbook, firstly it is to evaluate your technical ability to demonstrate if you are ready to take the CCIE lab exam and secondly to give you a better expectation of what to expect when that one day comes. Please ensure that you are very strict with yourself to get the maximum benefit from this workbook and treat it as if you were taking the real exam or even multiple lab exams considering the amount of time you are about to spend with this workbook.