多项选择题 The Schuyler and Livingston Iron Works has been working on getting its network security under control. It has set up VPN with IPSec links to its suppliers. It has installed network vulnerability scanners to proactively identify areas of weakness, and it monitors and responds to security events as they occur. It also employs extensive access control lists, stateful firewall implementations, and dedicated firewall appliances. The company has been growing very fast lately and wants to make sure it is up to date on security measures.Which two areas of security would you advise the company to strengthen? （）

问答题 DRAG DROP

单项选择题 A company is using a multi-site centralized call processing model. Which feature ensures that the remote site IP phones will still have limited functionality given a WAN outage?（）