For many students, the toughest part of the written exams for CCIE are the topics that are not covered in the lab portion. Perhaps motivation (or a lack thereof) might have something to do with it. Students realize they are ONLY studying the topic for the written and do not approach it with the same passion as the lab exam topics. Do not fall into this trap! Here is one for you to master that is written only for the CCIE R&S version 5. It is IOS XE. Make flash cards from this video and scratch this topic off your list!