The official self-study test preparation guide for the Cisco DQOS 9E0-601 and QOS 642-641 examsThis official study guide helps you master all the topics on the DQOS exam, including:QoS concepts, tools, and architecturesClassification and marking concepts and toolsQueuing in Cisco routers and configuration of queuing toolsTraffic policing and shaping in Cisco routersConfiguration of congestion avoidance toolsConfiguration of link-efficiency toolsCall admission control (CAC) tools for voice and video connectionsCisco QoS management toolsQoS design processesQoS on LAN switchesThe 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(tm) certification.

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