The Internet is an open system, and most information is available to everyone．It is very important to add ______ to existing system for protecting the secret information. -题库考试答案搜索网

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

单选题

2022-03-03 18:11

A、Web pages
B、modem
C、security
D、network

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正确答案

C

试题解析

解析：译文的含义是：因特网是开放式系统，多数信息对每个人都可用。为了保护秘密信息，对现有的系统增加()是非常重要的。选项A～D的含义分别是网页、调制解调器、安全性和网络。

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