Basically, a (71) is a standalone process or a set of integrated processes that runs on a router or server to control the flow of (72) application traffic (73) through it. Typically, firewalls are (74) on the entry point to a public 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.

72（）

A．network

B．networked

C．net

D．networky

按照我国有关的法律规定，遗产继承的第一顺序继承人为( )。

A．配偶子女父母

B．兄弟 配偶 子女

C．子女父母兄弟

D．父母兄弟配偶