预防乙型及丙型肝炎，重点在于（）。

A．做好饮水消毒

B．避免接触病人及病原携带者的血液及体液

C．注射乙肝疫苗

D．养成良好的卫生习惯

E．以上均是

NAC’s (Network Access Control)role is to restrict network access to only compliant endpoints and (1) users. However, NAC is not a complete LAN (2) solution; additional proactive and (3) 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 (4) In addition to NAC, enterprises need to implement role--based network access control as well as critical proactive security measures-real-time, multilevel (5) inspection and microsecond threat containment.

(5)

A．port

B．connection

C．threat

D．insurance