The Internet is an open system and most information is available to everyone. It is ver

计算机 公共英语 已帮助 人

The Internet is an open system, and most information is available to everyone. It is very important to add (74) to existing system for protecting the secret information.

(74)

A. Web pages

B. modem

C. security

D. network

请帮忙给出正确答案和分析,谢谢!

热搜:internet提供的主要信息服务有哪些