維護思科電信運營商服務質量考試要點

　　保持思科電信運營商服務質量(MSPQS)是與CCNP SP運營認證相關的考試。它主要檢驗考生在運用QoS機制支持電信運營商網絡環境方面的知識，包括如何采用Cisco IOS和IOS XR操作系統對這些環境進行監控、部署和故障排除。此外，它還可評估考生在基于從SP IP NGN 環境中收集到的QoS 統計數據管理性能和容量方面的能力。考生可以通過學習“MSPQS保持思科電信運營商服務質量”課程來準備該考試。

　　Exam Description

　　The 642-785 Maintaining Cisco Service Provider Quality of Service (MSPQS) exam is the exam associated with the CCNP SP Operations certification. This exam tests a candidate's knowledge of QoS mechanisms to support Service Provider networking environments, including how they are monitored, implemented, and troubleshot using both Cisco IOS and IOS XR operating systems. Furthermore, it assesses a candidate's ability to manage performance and capacity based on QoS statistics gathered from a SP IP NGN environment. Candidates can prepare for this exam by taking the MSPQS Maintaining Cisco Service Provider Quality of Service course.

　　Exam Topics

　　The following information provides general guidelines for the content likely to be included on the exam. However, other related topics may also appear on any specific delivery of the exam. In order to better reflect the contents of the exam and for clarity purposes the guidelines below may change at any time without notice.

　　Describe QoS fundamentals

　　Describe fundamental QoS technology

　　Describe QoS traffic classifications

　　Describe MQC in IOS and IOS XR

　　Configure and interpret Cisco IOS Software legacy QoS mechanisms

　　Describe QOS for MPLS VPNS for end-to-end service

　　Describe the IOS QoS mechanisms

　　Explain QoS issues which are unique to service providers

　　Describe QoS issues resulting from implementing of oversubscription

　　Manage performance and capacity based on QoS statistics in an IP NGN network operating center (NOC) environment

　　Use industry standard network management to monitor and diagnose QoS

　　Issue standard CLI commands in Cisco IOS and Cisco IOS XR Software for monitoring QoS operations

　　Use IP SLA to monitor traffic performance and diagnose QoS

　　Use Netflow to monitor traffic performance

　　Analyze statistics based on traffic classes and patterns

　　Given a QoS policy ticket that accurately defines an issue, describe the adverse effects that might result from a fix

　　Given a QoS policy change that has created an adverse effect, provide a potential solution

　　Troubleshoot QoS in an IP NOC environment

　　Describe the state of QoS on the router or interfaces using statistical data gathered from MIBs and from various IOS commands

　　Describe the effects on the network traffic based on given IOS QoS configurations

　　Perform and interpret packet capture to address a customer issue

　　Given a particular customer complaint, describe the actual QoS problem

　　Given a QoS problem, produce a recommended policy change and change order to fix the problem

　　Recognize typical QoS issues for different provider edge-customer edge (PE-CE) connection types

　　Recognize typical end-to-end QoS MPLS VPN issues

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