单选题 (共71题,共71分) on protecting information,hardware,and software from unauthorized use and damage.
正确答案: C 本题解析: 计算机安全性注重保护信息、硬件和软件,防止非授权使用和损坏。
data transmission to be successful,sending and receiving devices must follow a set of communication rules for the exchange of rules are known as______.
-mail
正确答案: D 本题解析: 参考译文 为成功地传输数据,发送设备和接收设备必须遵循一套信息交换的通信规则。这些规则称为协议。
have also been engaging in a type of electronic commerce,______occurs when one business transmits computer-readable data in a standard format to another business.