642-642 Exam Description
The 642-642 QOS exam is one of the qualifying exams for the Cisco Certified Internetwork Professional, Cisco Certified Voice Professional, Cisco IP Telephony Design Specialist, Cisco IP Telephony Express Specialist, Cisco IP Telephony Operations Specialist, and Cisco IP Telephony Support Specialist certifications. The QOS 642-642 exam will test materials covered under the Implementing Cisco Quality of Service QOS v2.1 course. The exam will certify that the successful candidate has knowledge and skills necessary to configure and troubleshoot Cisco IOS routers running Quality of Service protocols in Service Provider and Enterprise environments. The exam covers topics on IP QOS, classification and marking Mechanisms, queuing mechanisms, traffic shaping and policing mechanisms, congestion avoidance mechanisms, link efficiency mechanisms, modular QOS command line interface, and QOS Best Practices.

642-642 Exam Topics
The following information provides general guidelines for the content likely to be included on Cisco 642-642 exam. However, other related topics may also appear on any specific delivery of 642-642 exam.

* IP QoS Fundamentals
* Modular QoS CLI and Auto-QoS
* Classification and Marking
* Congestion Management Methods
* Congestion Avoidance Methods
* Traffic Policing and Shaping

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