Cisco DQOS Exam Certification Guide [Repost]

The official self-study test preparation guide for the Cisco DQOS 9E0-601 and QOS 642-641 exams. The Cisco IP Telephony Support, Design, and Operations Specialist focused certifications validate proficiency in designing, installing, and supporting a multiservice network solution. A solid understanding of quality-of-service (QoS) features and implementation is essential for all of the Cisco IP Telephony focused certifications and is also a core component of the CCIP™ certification.
Cisco DQOS Exam Certification Guide is a best-of-breed Cisco(r) exam study guide that focuses specifically on the objectives for the DQOS exam. Senior instructor and best-selling author Wendell Odom and senior Cisco AVVID consultant Michael Cavanaugh share preparation hints and test-taking tips, helping you identify areas of weakness and improve your QoS knowledge. Material is presented in a concise manner, focusing on increasing your understanding and retention of exam topics.

This official study guide helps you master all the topics on the DQOS exam, including:
QoS concepts, tools, and architectures
Classification and marking concepts and tools
Queuing in Cisco routers and configuration of queuing tools
Traffic policing and shaping in Cisco routers
Configuration of congestion avoidance tools
Configuration of link-efficiency tools
Call admission control (CAC) tools for voice and video connections
Cisco QoS management tools
QoS design processes
QoS on LAN switches