单项选择题
Which MQC-based output queueing method is designed to support multiple traffic classes including VoIPtraffic， mission-critical traffic， bulk traffic， interactive traffic and default class traffic？（）
A.Custom Queueing B.CB-WRED C.WRR Queueing D.LLQ E.CBWFQ
单项选择题 WhatistheportnumberofanIPsecEncapsulatingSecurityPayloadpacket？（）
多项选择题 InPPPoAarchitecture，whichtwomethodsaremostcommonlydeployed？（）
单项选择题 WhattypeofIPv6addressisthisaddress：FF05：：2：260：8FF：FE52：F9D8？（）
