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Use PrepLogic's QoS (642-642) Practice Exam and be confident on exam day. Our authentic coverage ensures you'll know each domain of the QoS (642-642) exam, including:

• IP QoS Fundamentals - 18 questions
• IP QoS Components - 19 questions
• Modular QoS CLI and Auto-QoS - 6 questions
• Classification and Marking - 24 questions
• Congestion Management Methods - 29 questions
• Congestion Avoidance Methods - 14 questions
• Traffic Policing and Shaping - 9 questions
• Link Efficiency Mechanisms - 12 questions
• QoS Best Practices - 15 questions

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The 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.

Cisco’s exam 642-642, “Quality of Service” (QOS) is a core requirement for the Cisco Certified Voice Professional (CCVP) certification. It is a mid level exam for IT professionals who have the “knowledge and skills necessary to configure and troubleshoot Cisco IOS routers running Quality of Service protocols in a Service Provider environment.”

This exam costs $125 USD. You can take the exam at any Prometric or Pearson VUE.

Cisco does not publish the pass score for this exam, which can include these types of questions: “multiple-choice single answer, multiple-choice multiple answer, drag-and-drop, fill-in-the-blank, and simulations.” The exam has between 45 and 55 questions and lasts 90 minutes. The topics covered by this exam include:

• IP QoS Fundamentals
• IP QoS Components
• Modular QoS CLI and Auto-QoS
• Classification and Marking
• Congestion Management Methods
• Congestion Avoidance Methods
• Traffic Policing and Shaping
• Link Efficiency Mechanisms
• QoS Best Practices

For more information:
http://www.cisco.com/web/learning/le3/current_exams/642-642.html