Exam Description: The CCIE Collaboration Version 2.0 exam unifies written and practical exam topics documents into a unique curriculum, while explicitly disclosing which domains pertain to which exam, and the relative weight of each domain. The Cisco CCIE Collaboration Written Exam (400-051) version 2.0 is a two-hour test with 90–110 questions that validate professionals who have the expertise to describe, design, implement, operate, and troubleshoot complex enterprise collaboration solutions. The exam is closed book and no outside reference materials are allowed. The Cisco CCIE Collaboration Lab Exam version 2.0 is an eight-hour, hands-on exam that requires a candidate to plan, design, implement, operate, and troubleshoot complex enterprise collaboration solutionsfor a given specification. Knowledge of troubleshooting is an importantskill and candidates are expected to diagnose and solve issues as part of the CCIE lab exam. The following topics are general guidelines for the content likely to be included on the exam. However, other related topics may also appear on any specific delivery of the exam. In order to better reflect the contents of the exam and for clarity purposes, the guidelines below may change at any time without notice.