NAC，s rNetwork Access Control)role is to restrict network access to only compliant endpoints and (71) users．However，NAC is not a complete LAN (72) solution；additional proactive and (73) security measures must be implemented．Nevis is the first and only comprehensive LAN security solution thatcombines deeD security processing of every packet at 10Gbps，ensuring a high level of security plus applicationavailability and Derformance．Nevis integrates NAC as the first line of LAN security (74) ．In addition toNAC．enterFIrises need to implement role．based network access control as critical proactive security measuresreal．time，multilevel (75) inspection and microsecond threat containment

A．port
B．connection
C．threat
D．insurance

请在“答题”菜单中选择相应的命令，并按照题目要求完成下面的操作。
注意：以下的文件必须保存在考生文件夹下。
王莉供职于一家电器商场，现在需要对本季度各产品的销售情况进行统计。
请你根据电器销量表(“Excel.xlsx”文件)，按照如下要求完成统计和分析工作：

复制工作表“电器销量”，将副本放置到原表之后；改变该副本表标签的颜色，并重新命名，新表名需包含“汇总”字样。