The authoritative data for a zone is simply all of the RRs attached to all of the nodes from the top node of the zone down to leaf nodes or nodes above cuts around the bottom edge of the zone.

• 给区域的授权数据仅仅是附加到从区域下面到叶节点或者在分割底部区域边缘上面的节点的顶节点的所有节点的RR。