质量服务（QoS）是一种常用和滥用的术语有多种含义。在

这本书中，QoS是指综合服务（集成服务）和区分服务（DiffServ的）。

虽然这两种机制大大不同，集成服务和DiffServ的基本目标是实现

为特定应用需要的带宽和延迟-Quality of Service (QoS) is a commonly used and abused terms have multiple meanings. In this book, QoS refers to the integrated services (integration services) and Differentiated Services (DiffServ' s). While these two very different mechanisms, integration services and DiffServ basic goal is to achieve the bandwidth required for a specific application and delay