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Introduction
This book is one of the members of the Cisco Press family of publications that has been developed to help you prepare yourself for the Cisco Certification examinations. This book’s specific target is the Support exam (formerly the Cisco Internetwork Troubleshooting [CIT] Exam). I am a Certified Cisco Systems Instructor, and CIT is one of the courses that I teach. I started teaching this course in the first quarter of 1999. I have passed both the old CIT 4.0 and the new Support exams, and I am fully familiar with the structure, content, and objectives of each of those exams. My students often ask me how I think the Support exam is different from the old CIT 4.0 exam. My answer is that I did not notice much change; therefore, any training material that can enhance your knowledge of the subjects covered in Cisco’s instructor-based CIT course is still very much valid and useful.

The Support (640-506) exam is one of the four exams you will need to pass to achieve Cisco Certified Network Professional (CCNP) certification in the Routing and Switching career track. The other three exams are the Routing (640-503), Switching (640-504), and Remote Access (640-505) exams. Optionally, you can take one exam that combines these three exams, Foundation 2.0 (640-509), but you will still need to pass the Support exam separately to attain CCNP status. Also note that Cisco Certified Network Associate (CCNA) status is a prerequisite to becoming CCNP certified.

Cisco strongly recommends that you attend its CCNP training courses before taking the CCNP exams. Table I-1 shows these courses and how they roughly map to the various exams. Cisco Press publishes coursebooks and Exam Certification Guides like this one to support your preparation for these exams.

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