Basically, a firewall is a (71) process or a set of integrated processes that runs on a router or (72) to control the flow of networked application traffic (73) through it. Typically, firewalls are placed on the entry point to a (74) Network such as the Internet. They could be considered traffic cops. The firewall’s (75) is to ensure that all communication between an organization’s network and the Internet conform to the organization’s security policies.

（74）处填（）。

A．local

B．national

C．private

D．public

当年龄误告造成多付或少付保险费时，处理的方法为( )。

A．调整保险金

B．调整保险费

C．调整保险金和保险费

D．合同无效