问答题 What is the protocol of following described： there are 4 priority queues：high，medium，normal.low the high and medium queue have precedence over the default queue the classifcation is configuration via the command ‘priority-list’ the default queue is the normal queue.

多项选择题 YourcompanyisresearchinganewapplicationthatrunsoverIPv6，butpartofitmuststillhaveIPv4support.YourcompanyusesatraditionalIPv4network.YourplanisnottorunIPv6overthewholenetwork，buttosegmentpartsofthenetworkoreventooperatesimultaneouslywithIPv6andIPv4.YoumustmakeabriefpresentationaboutIPv6technologytotheboardoftechnicaldirectors.Whichthreeoftheseitemscouldbepartofyourpresentation？（）

问答题 WhatarethefourtypeofaddressinNAT？