正确答案:
A PHB is a description of the externally observable forwarding behavior of a diffserv node applied to a set of packet with the same DSCP. Network nodes with diffserv support use the DSCP field in the IP header to select a specific PHB for a packet.
解析:
暂无解析
第4题:
问答题
简述发票的定义。
正确答案:
发票是指在购销商品、提供或者接受劳务以及从事其他经营活动中,开具、收取的收付款凭证。
解析:
暂无解析
第5题:
单选题
Which QoS model manages the QoS requirements for the network on a per-hop behavior (PHB) basis?()