NAC’s (Network Access Control) role is to restrict network access to only compliant endpoints and (66) users. However, NAC is not a complete LAN (67) solution; additional proactive and (68) security measures must be implemented. Nevis is the first and only comprehensive LAN security solution that combines deep security processing of every packet at 100Gbps, ensuring a high level of security plus application availability and performance. Nevis integrates NAC as the first line of LAN security (69) In addition to NAC, enterprises need to implement role-based network access control as well as critical proactive security measures-real-time, multilevel (70) inspection and microsecond threat containment.

（68）是（）

A.constructive

B.reductive

C.reactive

D.productive

主动运输过程主要包括离子泵、协同运输和光泵，其中离子泵消耗的能量来源是（）。

A.光能

B.运输物质的电化学梯度

C.蛋白质的分解

D.ATP高能磷酸键的水解